Not Martha

to make: bath bombs

bath bomb

By far the best bath bomb recipe and instructions I found in my search are given by Brenda Sharpe (thank you Brenda!). So go there and read those and look at great the photos. Ok? Ok. She mentions the need to keep the bath bomb mixture as dry as possible, but I live in a very damp climate. My first few attempts failed pretty miserably because of this. The problem is that the instructions call for you to mix all the wet ingredients together, which is great, but since my baking soda is pretty well moist without me adding anything to it, none of my skin-softening oils or yummy smelling essential oils were making it into the bomb either. So I made a few changes to the process. But first we must discuss a few things. Please remember everything contained here is my opinion or based on my personal findings and preferences. Use at your own risk. I haven’t hurt myself yet.

skip to: notes | instructions | afterthoughts

on where to get the ingredients
Baking soda is baking soda, you can get it in any grocery store. Epsom salts you can buy in any drugstore, in the medicinal aisles — it usually comes in a cardboard quart or pint milk container, somewhere around with the rubbing alcohol and bulk petroleum jelly. I have gotten essential oils of peppermint and rosemary from Majestic Mountain Sage, and From Nature With Love has been recommended to me. A quick warning, I bought a few oils online that I wasn’t happy with. Best bet is to buy essential oils from a local natural foods store that you can sniff first. They may be a little bit more expensive, but I find that it’s worth it. Mail order essential oils are best for hardcore soapmakers who are using ounces of essential oils at a time. Citric acid is where you’ll probably have the most trouble. I have been getting mine from Majestic Mountain Sage, I buy the 5lb, the smaller container goes surprisingly quickly. I haven’t had any luck finding it in stores, though I hear that you can find it in larger quantities for a good price at brewing and winemaking supply stores. The nut oil that you choose can be found in the cosmetics section of natural foods stores, or from Majestic Mountain Sage, I haven’t tried using any oils that you might find in the specialty section of cooking oils, although I have seen a number of recipes that call for nothing more than olive oil, so I suppose it’s up to you. Also see the supplies list at the Toiletries List.

a note about corn starch
update Feb. 19th, 2003
This space used to say:

It is used in many bath bomb recipes to make the bombs float, however I have read that corn starch can exacerbate yeast infections and can interfere with skin conditions. I have not found corn starch as an ingredient in any commercial bath bombs and, going upon the assumption that that is why, I leave it out. It’s true that without it the bombs are less likely to float, but you know, ack. Mine seem to float, or rather try to launch themselves right out of the water, the fizzing is so strong.

Turns out I was wrong. Wrong wrong wrong wrong. Commerical producers apparantly don’t use corn starch because it is more expensive, and cornstarch is fine for you, it’s actually great for you skin. That stuff about yeast infections I did indeed read a few different places, but let’s just assume they were wrong as well, wrong and paranoid. I’ll adjust the recipe as soon as I make a new batch. Which, sadly, could be a while since my current place has a small, shallow, miserable tub.

a note about salts
I use epsom salt because it’s cheap and there isn’t enough in the recipe to justify using expensive bath salts. Some recipes I’ve found are a bit unclear about what type of salt you’ll want. It’s best to stick with either Epsom salt or a sea salt intended for use in bathing. From what I can tell cooking salts that have been iodized will be drying to your skin.

a note about the molds
I also use clear plastic snap-together Christmas ornaments to mold the bombs. I got them from Craftopia when they were still around (they had three sizes), and found some at a local craft store, you can also buy a dozen 57mm (a good bath bomb size) here at the Oriental Trading Company. They do not produce perfect spheres, you can usually see the imprint of the seams in the finished bomb. If you’re striving for perfect spheres (I do not suggest this) I have heard a suggestion of using a meatball shaper (of which I have yet to actually find in existence), and I have found good sized (2″ to 3″ diameter) metal molds which come in clean half spheres at Sur La Table (I didn’t know what they were for until I saw an ice cream bombe spread in a Martha Stewart and there they were!), although they currently don’t have one on their Sur La Table. The ornaments also come in shapes (usually Christmas ornament related like bells, or hearts). You can also use any candy mold, I read people have a lot of success at this and that the bombs show shape very well, or pretty much anything else that makes a pleasing shape and seems like it would unmold easily enough. Be aware, that the mixture does scratch the plastic of the molds I use, so if you’re thinking of using an object near and dear, test it for scratchability first. Also keep in mind that you will need to apply a significant amount of pressure, so make sure whatever you use is up to this.

a note about scents
I prefer essential oils. I have purchased a few fragrance oils online and am consistently disappointed with the quality. What was I expecting? In one particularly bad incident I had to go to bed stinking of very fake chemical raspberry because it would not wash off. Fragrance oils may work great for soaps, but I don’t recommend them for bathing. I feel so naive.


ready to sift
add togther baking soda, epsom salt and citric acid in a collender to sift together


1 cup baking soda
1/2 cup citric acid
1/2 cup epsom salt

2 1/2 tablespoonss grapeseed, sunflower, or almond oil (or any nut oil is good)
3/4 tablespoon water and liquid glycerin
1/2 teaspoon or so essential oil (2.46 ml)
a good dust mask


I first measure out the baking soda into my work bowl (I use a large, cheap plastic one) and drop the essential oil and grapeseed oil directly into it, and mix until combined, it’ll look fluffy. (If you are making a large amount, you may want to take some baking soda into a smaller bowl, mix in the oils, then add that back to the larger bowl and mix in well.) If you’re not fond of bath oils leave out the nut oil at this step.

take a little to add oil and scent
taking a little out to add grapeseed oil and essential oil, in this case peppermint and rosemary

mixture appears crumbly
when added back to mixture and whisked in the misture appears crumbly

mixture is ready when sticks to self
it is ready when it holds when you press it togther

If you’re going to add color now is the time to do it. I have only experimented with small amounts of food colorings, not yet any dry pigments. If you’re going to go this route remember, make sure the food coloring doesn’t contain sugars, for the same reason we’re avoiding corn starch (see note above). I take a smallish amount of the mixture and separate it into a smaller bowl. Drop the coloring in a few drops at a time and mix, it should disperse after a while, make the color more intense than you intend it to be for the finished product. When it’s mixed, add it back to the mixture in the bowl and whisk until evenly dispersed. This will probably not be enough coloring to affect the color of the bath water itself. I’ll be looking into pigmenting the water in a little bit, or see the notes at the end of these instructions.

packing lightly into halves of mold
molding: step one

pressing molds together
step two

pressing molds together
step three

pressing molds together
step four

The citric acid and epsom salts will probably come in a fairly chunky granulated form, you’ll want to get them finer, about the consistency of superfine baking sugar or a heavy powder. I run mine through a coffee grinder I reserve for this purpose. Most of the bath bomb recipes I’ve found keep to a 2:1:1 baking soda:citric acid:salts ratio, which seems safe. But this isn’t baking so the measurements can be sloppily approximate without ending in disaster. When ground to a powder the citric acid will float in the air and make you cough (well, it makes me cough), use a mask and keep the area well ventilated. Whisk or sift the dry ingredients together really well to get the citric acid dispersed evenly throughout.

[update: see notes from 06.23.01 below regarding this step.]
I bought a few tiny spray bottles from Sunburst bottle which I use to moisten the mixture. I pour the oil/glycerin/water mixture into this and shake it before spraying. I usually only need two squirts to get the mixture to a moist crumbly stage at this point. I whisk the mixture while spraying to keep things moving. It’s very true that if you get it too wet it will set off the reaction even if it doesn’t appear to. As a result the bomb will not fizz when you’re ready to use it. It sort of crumbles in the bath, it’s not very pleasant.

I mold the balls as Brenda Sharpe instructs — it took me a little bit of practice to get it so that the balls didn’t just crumble in half, I fill each half of the ball, pat it in lightly, stack more on top of each side and push them together pretty hard. I let them sit for a few moments in the mold then unmold them veeeery carefully (don’t twist!) by allowing them to fall out of the mold one half at a time. I set on a clean kitchen towel, and put another one on top. This seems to keep them dry enough. If they begin to react you’ll see little, well, warts appear on the surface, eeek. A fan running in the room often helps this. I let them dry wrapped loosely in towels for at about a day. Some people put them in the oven. Some people sort of “cure” or harden the outer layer by spritzing them with witch hazel. Neither of these appears to work well in my climate. Sigh.
let set still molded for a few minutes
I let it set molded for a few moments, then carefully let it fall out of the mold one half at a time

I have a special little mold
I bought a tiny mold which works great for what mixture may be left over

set the bath bombs in a clean, dry towel
finished bath bombs, the large ones the size of a large plum or small apple

allow to dry for about a day
the bombs will dry wrapped in the towel and placed in a dry room for about a day before I wrap in tissue paper, then plastic wrap until ready to use

Now, use soon! They don’t keep long, and you might end up with something that will not fizz at all if they grow stale. Be aware that if you added bath oil to the bomb it will leave the surface of your tub slippery, so be very careful. If you’re mailing to a friend be sure to instruct them as such — when shipping I find it’s nice to wrap in clean paper, then plastic over that.

I added these instructions when giving as a gift:

instructions for use:

1. fill tub full of yummy warm water

2. gather beverage (something hot and coffee-like is nice), reading material, and various bath accessories of your choice

3. tell everyone around you who is making noise to shut up for a little while

4. place self in bath

5. don’t forget to have a towel within reach so you don’t get your reading material wet

6. drop in bath bomb – it will fizz

7. relax

8. now, isn’t this nice?

9. music or NPR is also good

* will not explode, i promise!

bath bomb ingredients: baking soda, citric acid, epsom salt, sunflower oil, glycerine, water, peppermint essential oil, rosemary esential oil

some things I have wanted to try but haven’t, yet

  • making bombs of layers of color
  • putting rose petals or calendula petals or peppermint leaves (warning: messy post-bath clean up)
  • using a dried colorant from Sunfeather or something like Tub Tints to either color the bath bomb or hide in the bomb as a “surprise! your bath is turning green” type of thing, but colorants which will not color the skin!

some things I have tried and have failed miserably at

  • I had this grand idea that I would hide entire gift sets inside of super large bath bombs. I could fit a small tightly folded washcloth, a small rubber ducky, some of those sponge pills, a small glycerin soap and a nail brush which would pop to the surface as the bomb worked away. Problem: it won’t hold, it really won’t, a bomb that big won’t hold even with nothing inside of it.
  • hiding other things inside, namely, a collection of foam letters or number that would pop to the surface. Problem: no matter what recipe I tried and what size bomb I tried, it won’t hold together because the foam letters have too much give to them.
  • hiding small, hard things, like a plastic ring. I had some luck with this. However, as the bombs dry, often a chunk would develop cracks or fall off completely, exposing the secret inside, negating the entire point.
  • my favorite idea I realize wouldn’t work before I even tried it: Making a bath bomb from a Mexican Sugar Skull mold and hiding a glycerin soap the shape of a brain inside! Either that or something involving baby head, brains or skulls. I’m still determined to make this work somehow. I’ll keep you posted.

Ummm.. what else? Don’t store the bombs in metal because the of the corrosive properties of the salt, avoid storing them in plastic zip-loc type bags or cellophane, I have heard reports that the plastic eats the scents, and a few mysterious reports of lavender essential oil going bad when stored in cellophane, and try to store them either sealed or in a dry area. Don’t use them if they look or smell funny, don’t run with scissors, call your mother.

A great place to learn more and get your questions kindly answered is the mailing list at Toiletries Listservice, instructions to sign up are on the first page. The site itself catalogs recipes and information about ingredients and safety. This is a very nice bunch of people who are eager to help and and have an immense collective knowledge, even if you’re a quiet lurker you’ll learn a lot.

If all else fails, order a bunch of fabulous bath ballistics from Lush [Great Britain|Australia]

For the sake of comparison I tried out some fizzballs I bought at Loft. It was nice, not very fizzy, and smelled to perfume-y for my taste. Oops, I just noticed one is supposed to use one ball for two baths. But the scent did stay longer than the bath bombs I’ve made using essential oils. Also, I like the addition of some oil for my poor poor skin.

06.23.01 notes

The batch I made to take the pictures above was different in a few ways. I was feeling lazy so I ground the epsom salt and made it through only half of the citric acid before I gave up and just dumped the rest in. I’ll let you know of this affects how fizzy the bomb is when I get around to using one. When I added the bath oil (grapeseed oil in this case) I didn’t measure, just poured a bit in, and added about twice as much essential oil to see how that would work out. When that was added back to the mixture as a whole, it was ready to be molded, so I didn’t use any of the oil/water/glycerine mixture. Which is great because there is always the chance you will set the mixture fizzing. The mixture molded and unmolded without any problems, we’ll see if the bombs hold together.

I meant to attempt to make colored bombs, but like I said, I was feeling lazy.

update: This batch came out badly, in crumbs, yuck. I’ll try again.


One thing mentioned at Lush and by a few people is that if you have or make a bath bomb with botanicals in it but don’t want them sticking to you or your tub, you can stick the bomb in the end of an old nylon or some loose fabric (cheesecloth or guaze) and it will catch all the little buggers.

update Jan. 3rd, 2007
A whole lot of great bath bomb instructions have appeared on the internet since I originally made these. I encourage you to hop over to Excellent Living to get the free 48-page PDF guide to making bath bombs, see her articles about making bath bombs and try this basic recipe.


198 responses so far ↓

  • 1 Mandy // Dec 3, 2006 at 5:52 am

    About corn starch…. I does “feed” yeast infections. My poor daughter had a horrible diaper rash when she was about a year old. We were using a corn starch based powder to keep her dry, and the rash was getting painfully worse. As soon as we took away the corn starch, it started getting better. It turned out that her’s was a yeast rash, and we were making it worse by “feeding” it :(

  • 2 Wendy // Dec 6, 2006 at 11:14 am

    Where can I buy the tiny molds? Thanks for the detailed instructions. They are great!

  • 3 megan // Dec 6, 2006 at 11:56 am

    Wendy – I bought a box of glitter goo that came in those small spheres, essentially I improvised. I don’t know where you could find them these days, my best suggestion is to look for things which come in round packages and see if anything could work.

  • 4 Kim // Dec 8, 2006 at 12:44 pm

    About how many balls does this reciep yeild? I understand it depends on the size of the balls but I did not find an estimatied yeild.

  • 5 megan // Dec 8, 2006 at 12:51 pm

    Kim – Unfortunately it’s been a few years since I made these and I don’t remember how many it was. I doubt it was more that six of approximately the size of a plum.

  • 6 Fiona // Dec 9, 2006 at 5:39 pm

    Thanks for the great instructions! I have just made my first batch but am experiencing some problems…
    The mix is literally forcing it’s way out of the sides of the mould halves! It’s like something from The Blob! Every time I check on them the mix has grown larger and larger outside of the halves…!! I hope you understand what I mean! Can you suggest anything? I have no idea where I’ve gone wrong!!

  • 7 Bailey // Dec 10, 2006 at 3:01 pm

    Just an FYI to all those avid fans out there: Michael’s Arts & Crafts sells those balls year round in many sizes. They’re usually located with the decoupage items. :)

  • 8 Leslee Mays // Dec 12, 2006 at 9:14 pm

    I have used sugar free Kool aid powder straight from the package for coloring and scent. It worked beautifully and it is food grade so that should not be a problem. The scent is quite nice as well. I just sprinkle a little in the mix for a pastel shade.

  • 9 Lisa // Dec 13, 2006 at 9:38 am

    About the Kool-Aid though – when I’m knitting, I use it to dye wools… the coloring can actually stain your friends…

    But if they need a little pick-me-up, I don’t see why not add some pink… or purple… probably yellow is not a good idea, though – no one looks good with yellow skin…

  • 10 Mel // Dec 13, 2006 at 11:51 am

    I just made my first batch of bath bombs last night. I think I used too much oil (?) and maybe too much water/glycerin as well, even though I followed the directions. About 30 minutes after I made the bombs, I noticed some were “warting” on the surface, and all of them were sort of slumping downwards. I squished them back together with my hands, but now they look like drop-scones rather than bath bombs! Oh well. I can use them myself.

    I think the next time I try this, I will start with less oil, perhaps.

    Also, as for volume of the recipe: I used the 80 mm plastic ball as a mold (which I heard was the same size as Lush bombs), and if you make one “serving” of this recipe, you get approximately 1.5 bath bombs. However, if you double it, you get more like 3.5 bath bombs. It’s very interesting…

    I also bought some powdered vanilla bean from Majestic Mtn Sage. It has a very pleasant smell, and colors the bombs a nice sandy color.

  • 11 Megan // Dec 14, 2006 at 9:19 am

    Hay, hay, hay!!!!!! (:-P

  • 12 Megan // Dec 14, 2006 at 9:22 am

    Can I have your MSN address if you have it????????????????????????? All the things on your website are fantastic!!!!

  • 13 Alex // Dec 14, 2006 at 1:11 pm

    Hi! Thanks for the instructions. I have been making bath bombs as Xmas gifts for the kids’ friends for a few years now. I live in a very dry climate, so (thankfully) I don’t have some of the same problems. I upped my oil and I find that the bombs hold together without the need for spraying with witch hazel. I just maybe a tablespoon of witch hazel with 2 c of soda, 1c of citric acid and 1 c of epsom salts. But 1/4 cup of oil.

    Anyway, my question. Has anyone used a shimmer or glitter in the bomb? I would like to get some exciting action a la Lush, but I don’t want to clean out the tub! Lush says that their glitter doesn’t stick to the tub. A big lie, some special sort of glitter or is it not a problem?

    I have only molded balls with my hands, as I have never gotten around to buying molds. I use a packed 1/2 cup and my big mitts can manage it. Your molded bombs look really nice, though. But an advantage of my “rustic” approach is that I never have trouble with the unmolding!

  • 14 Doria // Dec 14, 2006 at 6:21 pm

    Even though they’re expensive, I covet Lush bombs. Let me say though, the glitter ones do leave glitter in your tub (and on you). I’m surprised they say it doesn’t – how could it not? I quick rinse and swish with a sponge in your next shower cleans up the problem (or leave it for a while – it’s kinda nice – like fairy dust).

  • 15 krystal // Dec 16, 2006 at 5:33 am

    is anyone else having a problem with them falling apart? mine were hard when they came out of the mld, but after a day they are very mushy and the tissue paper is soaked in the oil. any ideas??? ahould i try water instead of glycerin? i really need help, these are for xmas gifts.

  • 16 Amy // Dec 17, 2006 at 7:45 am

    Hi! I am dying to make these for X-mas presents but am having a hard time finding citric acid. I know I can order it on the web but would like to find it locally (i’m in Ohio). Anybody mimd telling me what type of store they found it in? Michael’s craft doesn’t seem to carry it and neither does the local drug store. Thanks!!!

  • 17 pam // Dec 20, 2006 at 8:16 am

    Two questions; where can I find the tiny molds and do stores like Lush, use a dry colourant or liquid-which is best for a professional look?

  • 18 Michele // Dec 21, 2006 at 9:25 am

    has anyone ever tried plastic easter eggs? Also, where do you find Citric Acid, one website said to try the canning section at the grocery, but I have had no luck!

  • 19 Holly // Dec 22, 2006 at 7:39 am

    Re. Citric acid. I found it at Michaels in the soap-making section. It comes in a plastic tub. I also found glitter especially for soap-making there that I am going to try in my bombs.

  • 20 Barbara // Dec 22, 2006 at 3:03 pm

    If found citric acid at a place that sells supplies to brew your own beer and wine.

  • 21 krystal // Dec 23, 2006 at 8:12 am

    look in the candy isle for molds. i found a package that had Nerds in snap together ornaments.

  • 22 Melissa // Dec 24, 2006 at 9:30 pm

    I found citric acid in the Chinese markets. It is relatively inexpensive there too.

  • 23 pam // Dec 30, 2006 at 12:27 pm

    re:citric acid,can be purchased bulk and rather inexpensive at a store called Lynden House,Edmonton,AB.see their web site However, you may beable to get it only through in store pickup, but I do know laws about transport of dangerous goods has changed-so check with her if ordering.

  • 24 mel adamaitis // Jan 3, 2007 at 7:40 pm

    i would recommend using waaaay more oil–this is very very similar to the recipe that i use (i don’t use salt IN mine), and i use at least 3/4 cup of oil.

    i also use sweet almond oil, because i find that it tends not to stick to the sides of my tub. ^_^

    they won’t dry out, so you don’t get crumbly things, and you can roll them in things to make them look pretty–like dried lavender buds or epsom salt.

  • 25 Vanessa // Jan 9, 2007 at 10:25 am

    Great site and info.
    I’d just like to add that if you don’t want to use witch hazel you can just add 3/4 tsp of Distilled water. I mix Wilton’s colors for cakes with the water. It just seems to give better color.

  • 26 claryssa correa // Jan 11, 2007 at 6:50 pm

    Looking for round molds? Find them at
    Just look for Ice Cream Cone Candy Container in Craft for kids.

  • 27 kate // Jan 12, 2007 at 11:52 pm

    Hi Guys! I used to work in a wee factory commercially making these things. our recipe was different, but I think these general tips should still apply. : )
    1.we found with the bath bombs they require a certain type of environment to set properly, It needs to be humid, warm,. but not too hot. when we moved the factory from the harbour to the city they never set the same, never as hard, and kind of powdery.
    2. the amount of water or similar in the recipe- this is critical, if we were out by 10g in a 25 kg batch bad things would happen- too much water they slump more to a hamburger shape, and large cracks form. too dry and they can crumble, or seem powdery. please note if mixture is cold it can act dry, so making with warm water can change results.(probably under 20’c?)
    3.Pressure. the mix must be firmly packed inside the mold or they will slump.
    Hope this helps!

    : )

  • 28 krystal // Jan 25, 2007 at 8:03 am

    kate, can you post the recipe that you used??? i am still having issues with these.

  • 29 james // Jan 28, 2007 at 5:04 pm

    I’d be interested in the recipe as well. Also any tips on colour if you have any…

  • 30 Adrienne // Feb 1, 2007 at 9:35 pm

    Question: Has anyone used the metal press’ for making the bath bombs? The ones that look like a two sided ice cream scooper? Likes? Dislikes? Comments?

  • 31 jaime // Feb 10, 2007 at 2:37 pm

    can you use any kind of oil? i only have cooking oil.

  • 32 hannah // Feb 11, 2007 at 8:33 pm

    can you send me the recipe for bathbombs and soap? thank you!

  • 33 Tessa // Feb 25, 2007 at 10:33 am

    Sweet! I’m gonna try that sometime!

  • 34 Spa, Roman Baths and Dry Skin Recipe - susiej // Feb 25, 2007 at 1:50 pm

    […] Mix this up with some extra light olive oil, (always in a glass bottle. This Book explains that the plastic reacts with the oil and creates some nasty toxins.) Add some Epsom Salts and Essential Oils. You want it to be thick so that it will stay on your skin as you slather it all over yourself while you stand in the shower. (Before you start, sprinkle some baking soda in the bottom of the tub – it will absorb any of the oil you drop and keep you from slipping.) Rub it in, and let the grainy salt crystals polish off the dead skin, so the oil can penetrate through your skin. And yes, the essential oils are like medicine. Yes, you and your bathroom will smell like heaven. For a list of winning combinations, click here and here (also a bathbomb recipe) , here, here, and here. […]

  • 35 Emily // Mar 5, 2007 at 6:55 pm

    I saw on a kid’s craft website that yo can just use a ping pong ball cut in half. Personally, I’ve never tried bath bombs, but it sounds like a good idea.

  • 36 Cheryl // Mar 15, 2007 at 10:28 am

    After much searching I’m going to try your recipe. I love your attitude, it’s just like mine. Hope you get a bigger tub soon. Cheryl

  • 37 Tammy // Mar 22, 2007 at 7:06 pm

    I too am from Ohio and had trouble locating Citric Acid. I found a place called Boleks Craft, they used to be Reynoldsburg and have since moved to Dover. Anyway I have a catalog from them, they sell Citric Acid in a 24 oz. tub for $3.85 I am sending in my order soon!!!

    Thanks for sharing such a great detailed recipe!!!

  • 38 jessica fancy // Mar 29, 2007 at 5:50 am

    You could use easter egg holder things for the molds! I just thought of that. I have some at home. hooray.

  • 39 Bobbie, yukon // Apr 11, 2007 at 4:39 pm

    I’ve been making bath bombs for years and recently I used plastic easter eggs as molds with my class, it worked great!

  • 40 snookki // Apr 17, 2007 at 9:51 pm

    ive been looking forever on the net for chat rooms to meet people that make bath product like bath bombs, bath salt,soaps etc. I havent found anyone my email is
    i just want someone to talk about making bath things, exchange ideas and maybe answer a coupple of questions i have. this is the only web site i found that people are intrested in the same thing as me. I hope someone add’s me! thanks for reading this

  • 41 paz // May 11, 2007 at 10:35 pm

    Where can I buy the tiny molds? Thanks for the detailed instructions. They are great!

  • 42 Tabitha // May 15, 2007 at 10:50 am

    Cool website.I am very interested in making all sorts of bath and beauty products and found this site informative and interesting.I haven’t been able to make bath bombs b/c I don’t know where to find citric acid,they don’t carry it @ my local grocery store.Other than ebay where can I find citric acid?

  • 43 Laura // May 27, 2007 at 3:21 pm

    I might try using plastic snap-together Easter eggs; should give a more ovate shape. With different colors, they can even look like Easter eggs! Wonder if it will work. I don’t see why not.

  • 44 aloe // Jun 13, 2007 at 3:42 am

    You could cheat & leave the bath bombs inside the easter eggs, add a bit of tape to hold them closed, a note & hand them out as is. They had some lovely glitter & metallic & marble ones last year at walmart–

  • 45 Jose Vinelli // Jun 14, 2007 at 3:25 pm

    Im from argentina,and wish to start making bombs,did some trys but one explicit question!.What is the best way to colour bombos in a vibrant not pastel color like?
    Thanks a lot!!!!!!

  • 46 Jamie // Jun 20, 2007 at 7:57 am

    I was wondering how far in advance you can make the bath bombs. Can they hold for a month, for instance, in an air tight mason jar?

  • 47 emily // Jun 20, 2007 at 12:00 pm

    i think citric acid is the very same thing as Fruit Fresh. Find it in the canning section or bakery isle.

  • 48 Christina // Jun 25, 2007 at 1:17 am

    I just started making these about 2 weeks ago and I’ve had good success so far. I used Brenda Sharpe’s recipe (link at top of page in first paragraph). I actually found if you use a little more oil, either light oil or fragrance oil, it works slightly better. And also makes for a more fragrant bomb. I add avocado & jojoba oil, fragrance oils and even cocoa butter (about 1/8) tsp. and they come out lovely.

  • 49 Christina // Jun 25, 2007 at 1:19 am

    As far as coloring goes, I tried it for the first time and it worked out great. I used Wilton’s icing coloring of kelly green and rose pink. These are gel colorants and I used several pinches in the finished powder product and then mixed thoroughly. Just a tip to the wise- wear rubber or latex gloves when doing this, otherwise your fingers will be discolored for days. One guess how I figured that out… My colors came out fairly vibrant witht his method.

  • 50 Christina // Jun 25, 2007 at 1:27 am sells this fabulous stuff called kaolin clay powder which works wonders with the bombs. I tried it and replaced half of my cornstarch with this stuff (since I’ve read about cornstarch feeding yeast infections, etc) and it was great. Makes the bombs harder and dry faster, as well as this stuff being good for the skin. On ebay I bought this super nifty gadget called a “snoballer” which is used for a bath bomb mold and it makes for a HUGE bomb, it’s great. I believe it was also labeled as a bath bomb mold, but it’s really a snowballer. It’s big enough you can either make one big bomb or make two halves. I hope all this info helps. BTW, I love this site. :)

  • 51 Christina // Jun 27, 2007 at 1:47 am

    An update on the colored bombs: I had make kelly green and rose pink bombs with a fair amount of Wilton’s icing colorant. The pink turned the water pink but did not discolor the skin and left only a slight pink tinge in the tub which cleaned easily with just a post bath rinse. The green however, turned my daughters fingertips green while she was playing with the bomb in the tub, and turned the water green as well. The only skin tinged was her fingers and that was only temporary – by the time bathtime was over, her hands had wrinsed clear and no residue left in the tub either. So, I guess maybe green or that bright of green is not a good idea and maybe stick with pastel greens or use not too much green dye. :)

  • 52 Christina // Jun 27, 2007 at 1:55 am

    If anyone has any questions to ask me or tips, please feel free to email me at BTW, I bought the icing coloring at Walmart in the craft area where the caking decoring stuff is. Not the cake mixes aisle, but the wedding cake decorating aisle in the craft section. :)

  • 53 Christina // Jun 28, 2007 at 11:41 pm

    I found a great site where you can buy different sized ornaments for molds. They’re called fillable ball or clear ornaments in multiple sizes, up to 100mm. I believe the standard size is the 60mm ones. This site even has hearts, star and egg shaped fillable ornaments. They are acrylic. I ordered the 100 & 80mm sized, and the hearts and stars. I’ll let you know how they turn out. :)

  • 54 Christina // Jul 13, 2007 at 7:40 pm

    Just to let everyone know, the 100mm size is unrealistic. WAAAYYY to big. 80mm might be do-able, haven’t tried it out yet. The hearts and starts molds are perfect sized. Also, if you can find a “meatballer” in stainless steel, this is the perfect size for a small bomb and it has convenient holes that you can bore through the bomb and put flowers or “surprises” in the bomb.

  • 55 Christina // Jul 14, 2007 at 7:55 pm

    Here’s the site for the Norpro stainless steel meatballer. You may be able to find it at a local store.

  • 56 Linda // Jul 31, 2007 at 9:32 pm

    I’ve been making bath bombs for a while now and use edible glitter to color them(found with cake decorating supplies) – it makes the bombs look very pretty and doesn’t leave a mess in the tub.

  • 57 Vaibhav // Aug 5, 2007 at 8:51 pm

    Hi i tried making just a fizzing powder added citric acid, and baking soda with essential oils. stored it in an air tight jar and it seems to become hard and fizz. over a period of 24 hrs

  • 58 Sarah // Aug 6, 2007 at 7:24 am

    This is a great idea for Christmas! So simple and inexpensive too. I have one silly question tho. I couldn’t find the snap togethere clear X-mas ornaments so could I uses something similar likt two bottom halfs of an Easter egg? It’s so crazy it would probably work

  • 59 Shannon H. // Aug 8, 2007 at 10:44 am

    Can anyone tell me how to color a bomb that won’t clump? I tried making an apricot color but the colors clumped pink and green no matter how hard I tried to get it to mix. Now granted, it does turn apricot when it’s added to water, but I want it to be apricot BEFORE it’s added. Thanks so much!

  • 60 Betty // Aug 16, 2007 at 2:47 pm

    I love your site! I’ve been reading about making bath bombs and so far, your instructions and tips are the best! I can’t wait to put them into action! Thank you for sharing!

  • 61 Shannon W // Aug 26, 2007 at 1:11 pm

    I’m a big fan of sea salt in almost all bath products, but I’ve found that, even in an almost powdered state, the salt makes this recipe harder to deal with. Mine harden faster and harder without it. I can’t really tell a difference in the bath, and the fizz is the same.

  • 62 Melissa // Sep 28, 2007 at 4:14 pm

    I have just started to make my own bath bombs and used some molds, a cut tennis ball, and a pudding cup.
    I was wondering if round, hard, small toy plastic containers would do the trick? The kind that you get from a toy machine. Any thoughts???
    Thanks, much appreciated!

  • 63 LYNE // Oct 23, 2007 at 1:07 pm

    Hello my name is Lyne and I live in Canada.

    I have try to make some bath bomb today with your recipe. The problem I have is that they do not hold together in the center I have try another batch and I will see tomorrow if they will hold. I you are looking for some bath mold for bath ball there is a store in Canada call Multicrafts and gifts you may order from them. There phone number is 613-739-7415 and the web site is The balls are clear snap-shut ornament number for the following size is xGC454 for 70 mm ball, xGC455 for 60 mm ball. You do not need to have a store to order with this company

    Thank you Lyne

  • 64 Jonelle // Oct 25, 2007 at 5:05 pm

    I would like to know the chemistry behind bath balms. I mean, why is it a 2:1 ratio of baking soda (1 c) to citric acid (1 c)?

    What if you were is use a 1:1 ratio… would the fizz be any bigger or better or longer?

    please email me directly with response… thanks

  • 65 sveta // Oct 25, 2007 at 11:04 pm

    I enjoy your site very much! THANK YOUo

  • 66 paula llorens // Nov 9, 2007 at 7:52 am

    Hola, soy de argentina, les queria preguntar porque algunas se rajan, estoy probando la receta basica que funciona muy bien.


  • 67 blanche // Nov 27, 2007 at 12:53 pm

    What a great article, I wish I found it earlier, before I ruined a bunch of bombs. Like Mel’s, my bombs all slumped within an hour of making.
    I’m pretty sure I didn’t overdo with the oils, and the weather isn’t that humid here. My citric acid is pretty coarse, so maybe that’s the problem.
    What if I left the bombs in the molds for a few hours?

  • 68 Tammy Frase // Nov 27, 2007 at 8:32 pm

    Hi I am grateful for the receipe but I am having trouble with mine. I have only 2 out two batches to stay together.

  • 69 blanche // Nov 29, 2007 at 2:05 pm

    Second batch – pancakes again!
    I had no idea it was so humid here. And I used only 1 mist with water this time.
    I’ll have to get some corn starch, nothing else worked.

  • 70 Pam // Dec 7, 2007 at 6:19 am

    Help! I’m making some bath bombs for gifts. I have been making them successfully for a little while, though not in huge quantities. The last two batches were a disaster – they stay sorta moist and crumble to fine powder when I try to pick them up. (I’m using half-molds, so they’re flat on the bottom. I have tried leaving them in a warm room, leaving them in a cool room, having a fan going, and I’m even trying to cook a few now which doesn’t seem to be working. They’re basic – baking soda, citric acid, powdered color, grapeseed oil, fragrance – same as worked before so beautifully, but nothing seems to be working now. Of course, I need them *fast*….. Suggestions?

  • 71 Sarah // Dec 12, 2007 at 1:24 pm

    I FINALLY found citric acid! It’s also called Sour Salt. I found it in the kosher isle of a local “upscale” grocery store. I basically bought them out. Time to get crafty!!!

  • 72 Make custom bath and body gifts | Do it Yourself // Dec 13, 2007 at 6:40 pm

    […] And whether you could use a little help putting a bath bomb together, you’ll want to see the following sites: How to manufacture Bath Bombs and Not Martha’s Bath Bombs (Megan recommends scenting your bombs with fundamental oils only). You might plus need some sources for citric acid. […]

  • 73 Sarah // Dec 17, 2007 at 11:49 am

    Okay. Just finished my first attempt at bath bombs. Some are cracking a little, and some have warts. I think I am not mixing in the wet stuff slowly enough (I’m kind of an instant gratification girl).

    Also, I used soap molds from Michaels with little raised flowers in them. They turned out cute (for now). I will have to see what happens in the next couple of hours or so.

    Also, I recommend doing this in a WELL ventilated space. It’s going to stink like lavender for days in here. (which may not be a bad thing.)

  • 74 Indy // Dec 17, 2007 at 7:02 pm

    Hi, do you remember where you got the little mini mold you used for the “leftover” small amount of bomb stuff? I have been searching for one of those small molds for a while now.

    Love your site!

  • 75 Sarah // Dec 17, 2007 at 7:53 pm

    After batch 10 now, I’m a pro. My tips:

    1. Slow and steady wins the race when adding your liquids. Listen to make sure it is not fizzing.

    2. I leave out the Corn Starch and in my wet ingredients, I use 3 Tbs. oil and just 1 tsp. water. The rest is the same as Brenda Sharpe’s recipe.

    3. Liquid soap dyes and fragrances are not only effective, but CHEAP. Found them in the soap making isle. Love it.

    4. This is an addictive hobby… :)

  • 76 Tammy // Dec 19, 2007 at 7:50 pm

    Hi, loving this, they all turn out great. I found citric acid that is $24 for one kilo which is good since prior I had the pharmacy order it for $5 for 100ml .;o. The site is in mississagua you call and place order 2hrs in advance and pick up…happy day!! bomb making rocks! I have to have a bath nightly now…hehe Thanks so much Tammy in Oakville

  • 77 Renea // Dec 27, 2007 at 11:03 pm

    for those looking for containers… why not use those little plastic Easter eggs that Wal-Mart and every other store on earth sells for Easter? Just a thought… they do seal though.

  • 78 jody // Jan 7, 2008 at 6:36 pm

    would anyone suggest good aroma oil combinations to use?? I lUV lush bath bombs..but i think theres have more than just oils in them and actually have perfume. Mine i made with citrus smelling oil and it wasnt my thing.. thanx

  • 79 bodgkens // Jan 10, 2008 at 5:38 pm

    help! I have been making bombs for a while and one thing really stumps me. I want to make them float wo using corn starch. Anyone able to float theirs wo it? What is the trick for this? Thanks You all! Well, have to go take a bath!!

  • 80 Terri // Jan 20, 2008 at 9:08 pm

    I went to the Excellent Living site as you suggested to get the free 48-page PDF guide to making bath bombs and as of Jan 20, 2008 it is not longer available. Did anyone download it before she took it off and can share a copy of it?

  • 81 megan // Jan 21, 2008 at 8:41 am

    Terri – It looks like it’s here at, the link for the PDF is there.

  • 82 deluca // Jan 22, 2008 at 2:01 pm

    Bodgkens, if you want them to float, make them flat. I use a one cup measuring cup for the shape. They float on the top every time.
    I would like to point out that the recipe provided by Brenda is really great, BUT borax is actually toxic to humans. Even though you aren’t eating it in this recipe (I don’t care how good some of them smell) you are still soaking in it. :(

    Wikipedia had this to say about it:

    “Boric acid, sodium borate, and sodium perborate are estimated to have a lethal dose (LD50) from 0.1 to 0.5 g/kg in humans. These substances are toxic to all cells, and have a slow excretion rate through the kidneys. Kidney toxicity is the greatest, with liver fatty degeneration, cerebral edema, and gastroenteritis. A reassessment of boric acid/borax by the United States Environmental Protection Agency Office of Pesticide Programs found potential developmental toxicity (especially effects on the testes). Boric acid solutions used as an eye wash or on abraded skin are known to be especially toxic to infants, especially after repeated use because of its slow elimination rate.”

    Sorry to be a buzzkill, just food for thought.

  • 83 Jade // Jan 27, 2008 at 10:43 am

    To Tammy in Oakville and everyone else…I have a cheaper source of citric acid for you. I have just ordered from New Directions Aromatics

    this company sells citric acid for $5.80 for 1kg and ships from Brampton in Ontario or Cheektowaga, NY, for their United States site.

    They also sell everything else you could possibly need for making bath and beauty products.

    (and no I don’t work for them!) :)

    Hope this helps someone.


  • 84 Cait // Feb 4, 2008 at 8:31 pm

    Asolutely without question love your sense of humor and long-suffering perseverance to everything you try out. It’s not only hysterical, but also sooooo informative.
    I love reading about some of the ‘creative disasters’of others. Glad to know that I’m not alone. lol
    We are a fledgling company here in Hamilton On. Canada and i had a wickedly bad hair day, had run out of my lush products and so i went on a quest. bath bombs were for me!!!! NOT !! what i wound up fineseing (sp) was a bath / mas. oil that wound up being a one of a kind hand cream. go figure. I just threw everything i had into this cobalt blue jar and The Kitchen Sink was born. We renamed because of the whole housework concept… bleck… it’s now known as Caitlands’ Kiss. I made my mark on the world!
    I created something that people love … once they try it.
    it’s in a local health store!! AND … they sold 2 jars at 39.99 each!!!
    I’m famous, we have a one page website….. ok, so it’s not exciting to anyone else but us, but now I’m back to where I started… bath bombs.
    thnx for pointing out the corn starch thing cuz I was going to throw a bit in. going to reconsider. Love hearing from and about everyone. bombs away???
    couldn’t help myself.

  • 85 Erin // Feb 10, 2008 at 2:16 pm

    Hey! I agree with the 1st comment…cornstarch definitely feeds yeast. Our baby boy had a yeasty rash, and the cornstarch turned it into something rather severe that looked almost like a chemical burn. Of course that was applied frequently and then covered up, but it can be a nasty combo! Otherwise I think this all looks too fun!

  • 86 Honeybee // Feb 11, 2008 at 3:54 pm

    Sounds like you are in Seattle. You can buy citric acid in bulk at Zenith (On Roosevelt, near Whole Foods) for $2 lb.

    Soap molds also work great if you don’t want a basic ball shape.

  • 87 Re: 2000 bombs per day with a Machine // Apr 7, 2008 at 10:38 am

    Yes, definitely. I would be interested in learning how to make bath bombs as a business. Making them by hand is too time-consuming and they don’t always come out right. If you wouldn’t mind sharing your recipe and/or your machine technique please email me at



  • 88 Haley // Apr 14, 2008 at 4:51 pm

    hey your Baths Bombs ar AMAZING!! I could soke in them all day

  • 89 Jeanine // Apr 22, 2008 at 9:12 am

    Hello –

    If I wanted to put some sort of a coating on the outside of the bath bomb so it would have a shiney appearance, so it looks more decorative, and when you put it in the water the material on the out side would disolve quickly and fizzing would start instantly, what type of material could I use for the coating?

  • 90 A // May 10, 2008 at 1:59 am

    Why don’t you use muffin tins for the moulds?

  • 91 Alena // May 12, 2008 at 10:36 am

    I am very interested in everything concerning baht bomb business. I would be grateful to hear about your package of knowledge and especially about the Bath Bomb machine. Thank you.

  • 92 Anna // May 24, 2008 at 6:26 pm

    I am also intersted in the bath bomb
    business. I would be happy to hear about your package and machine. Thank you.

  • 93 Heather // May 27, 2008 at 7:16 pm

    I am interested in finding a fool proof recipe for bath bombs that smells strong (essential oils) and fizzes long. Can anyone help?

  • 94 Heather // May 27, 2008 at 7:18 pm

    oh yeah…my email address is


  • 95 Brooke // May 31, 2008 at 6:41 pm

    I’ve tried like the dickens to make these and I fail everytime. I’ve just resorted to making bath teas:)

  • 96 Kelly // Jun 13, 2008 at 11:54 pm

    LOL!!! okay…I found another recipe that called for cocoa butter..I thought “well that should keep it solid and together”…NOPE! It was even suggested to put them in the freezer for a few minutes and that didn’t work either. I took them out of the freezer and popped them out of the molds and even tho they held together well they were “sweating” oil and were sticky to the touch. A little pressure crumbled them into a sticky mess! SO, I threw in some epsom salts (not in the original recipe) and a little more essential oil and made a batch of bath sprinkles…fizz’s like crazy, smells devine and my skin feel great. I guess it’s the end result that counts here, huh?

  • 97 Jill // Jun 15, 2008 at 10:02 am

    I just started in the bath bomb business and the first few batches came out great now I can;t get them to stay together any advice? Help!

  • 98 soph // Jul 4, 2008 at 5:41 am

    I’m planning on making these as favour for our wedding, how long in advance can I make them if they are packaged and then sealed in a tupperware? I got a tiny meatballer from Regal, should work great.

  • 99 Lip Gloss and Laptops » Blog Archive » Episode #113 - Lip Balms, Bath Bombs // Jul 23, 2008 at 12:02 am

    […] Martha tells us how to make Bath Bombs at […]

  • 100 Karen // Jul 28, 2008 at 3:47 pm

    For those of you who are having problems with the bombs staying intact, put some rubbing alcohol in a spray bottle and spritz the bombs a few times after they are unmolded. This has helped me greatly. Also, I am told that adding kaolin clay into the recipe helps with the hardness and cracking.

  • 101 Episode #113 - Lip Balms, Bath Bombs | // Jul 29, 2008 at 7:42 am

    […] Martha tells us how to make Bath Bombs at […]

  • 102 Rock Papier Ciseaux » Blog Archive » Ce Noël, offrez des cadeaux faits à la main! // Aug 3, 2008 at 3:42 pm

    […] Des bombes de bain (bain champenois si vous voulez être plus fancy) […]

  • 103 Karen // Aug 8, 2008 at 4:17 am

    For everyone that is having humidity problems, probably the worst thing that you can do is to add glycerin to your bath bombs. Think about it, glycerin draws moisture from the air!

  • 104 Bath bombs - Bade Bomben « : unikatissima : // Aug 19, 2008 at 10:04 pm

    […] Duft, Fragrance, Kosmetik, Seife, Soap Deutsch | English | Links While surfing I found a tutorial on how to make bath bombs. I’d never thought that you could make them yourself! Next summer will be a good time for a […]

  • 105 unikatissimas » Bade Bomben // Aug 21, 2008 at 6:57 am

    […] Surfen habe ich eine Anleitung für die Herstellung von Bade Bomben gefunden. Ich hätte nicht gedacht, dass man die selber machen kann! Nächsten Sommer ist eine gute […]

  • 106 unikatissima’s » Bath bombs // Aug 21, 2008 at 7:01 am

    […] surfing I found a tutorial on how to make bath bombs. I’d never thought that you could make them yourself! Next summer will be a good time for a […]

  • 107 kris // Aug 21, 2008 at 5:51 pm

    I have used the 2 sided ice cream scoops for molding. only problem I’ve had is they start sticking after you’ve made one! You have to rinse the scooper out after each one, and dry it! There has to be a secret to not sticking, otherwise I Love the way they turn out in perfect sphere! I don’t use any oil except essential oils. They work really nice.

  • 108 NanaJane // Sep 21, 2008 at 11:57 am

    I am very interested in your bath bomb machine and all other pertinent information. Please contact me @

  • 109 Bee // Oct 4, 2008 at 8:20 am

    I made some of these the other day and had no problems!! They work great! For coloring I used a powdered fondant color. It worked great, and gives the bombs a nice shimmer without sticking to the tub or leaving stains.

  • 110 Megan // Nov 13, 2008 at 2:04 pm

    I noted that you are in the Seattle area. You might want to check out Brambleberry ( or for supplies.

  • 111 Sam // Dec 8, 2008 at 10:35 am

    A place in Canada has all the incredients you need, citric acid, bicarb, floral waters and the 60 – 70- & 80 mm round bath bomb molds, they even have heart shaped molds.

  • 112 Shawna // Dec 20, 2008 at 11:10 pm

    About the fragrance oils… I really didn’t like the f/o from a lot of the places that I tried, until I went to Aroma Haven at Their f/o’s smell sooo good. (…and they give out free samples with your order)

  • 113 Shalene // Jan 1, 2009 at 12:40 am

    I just started making bath bombs the past couple of weeks – I am having a huge problem with humidity (it’s 35 degrees Celcius here with humidity at around 80% plus).
    One day I had success baking them in a very slow over for 1 1/2 hours then wrapping them in paper towels and sitting in front of a fan overnight.
    The next time I tried the same technique they started to bloom, so I put them back in the over for another 3/4 hour, it stopped them blooming any further but they were still covered in warts – they fizzed good though.
    Not to be beaten I researched dehumidifiers, dry cabinets etc – too expensive for me at the moment, but I have some good ideas to make a dry box out of wood and put in wire rack shelving and a mini dehumidifier.
    In the meantime, I am conducting an experiment using a plastic storage box lined with a towel and have placed a Damprid container (one of those containers with damp asorbing stuff in it) into the box, wrapped the bath bombs in baking paper and place inside the plastic storage box.
    So far they have been in there for 16 hours, drying slowly and with no blooming.

  • 114 Kim cooper // Jan 11, 2009 at 1:16 pm

    Dont know what i’m doing wrong.Help.Making bath bombs for the first time,and the mixture is staying in both sides of the molds.I cant get them to come out as one ball,just the two halves.I used some x-mas ornaments made out of aluminum,and i tried plastic easter eggs.Any idea’s.

  • 115 cc // Jan 20, 2009 at 3:44 pm

    I love your site. I have made bath bombs before and I too bemoan our tiny tub. Two possible ideas. i have used powdered vitamin C tablets for the citric acid in a pinch. They work perfectly.I have also found that decorative flexible ice cube trays produce nice looking mini bombs. I was tasked to make these as favors for a friends bridal shower . Lime and peppermint make a mojito scented bomb yum!

  • 116 Inspiration - Homemade Bath Bombs & Bath Tabs « Food for the flowers to grow // Jan 25, 2009 at 4:56 pm

    […] Inspiration – Homemade Bath Bombs & Bath Tabs In Inspiration, Recipes, craft, howto on January 25, 2009 at 6:56 pm From Not Martha – Homemade Bath Bombs […]

  • 117 pine // Feb 3, 2009 at 3:33 pm

    hi everyone. i am desperately in need of help. my bath bombs are falling apart. they are not hardening enough overtime and are crumbling on my shelves. please help!

  • 118 Beth // Feb 16, 2009 at 6:50 pm

    You can buy citric acid through scientific supply companies like Sigma Aldrich.

  • 119 MoonSong // Feb 21, 2009 at 11:40 am

    I make bath bombs and use cornstarch in them, so after reading your comment on weather or not cornstarch causes yeast infections or not, I did some research. All the true information out there I found from doctors state that cornstarch does not CAUSE yeast infections, nor does it encourage them. Just thought I would share. I was starting to get worried myself over this. I have used them many many times and have never gotten a yeast infection.
    I do like the idea of the epson salt though and I am going to try it, it is good for sore achy muscles! Thanks for the ideas!

  • 120 chris // Feb 22, 2009 at 5:57 am

    I am have a great time making bath bombs and have had no problems with the round molds but it seems when I try easter eggs or some other type of mold I have a heck of a time getting the out of the molds. Any suggestions. Seems like out of 20 molds that I use I only seem to get about 3 of them out successfully? I’ve heard that adding oil inside of your mold helps release them easier?

  • 121 Aunt Boni // Mar 21, 2009 at 10:22 am

    I gasped when I saw the line that mentioned the possibility that corn starch might lead to yeast infections! My mother used corn starch on the bottoms of her babies – every one of us! Whew…..I’m happy to know this is not true! (It’s great for keeping a baby bottom dry. No perfumes and much less expensive than baby powders!)

  • 122 jill // Mar 22, 2009 at 10:56 am

    I want to know if anyone has used kaloin clay? I bought some and was told to leave out 1/2 of the bicarbonate and replace it with the clay. they were ugly and soft. they did harden after 24 hours rock hard. What can I do to get them not to crack or flatten and to accept color? I have been making bath bombs for along time and have not had any problems. But want them to dry faster if possible.

  • 123 dee // Mar 26, 2009 at 5:47 pm

    me and my daughter are killing ourselves laughing right now – in the tips it says some people dry them out in a warm oven….
    here’s a hint – dont leave them in too long…we have these flat bubbling bombs on the sheet – tried one and it still fizzes – looks like melted ice cream and doesnt disolve very well :)

  • 124 Judy // Mar 27, 2009 at 1:50 pm

    I just gathered all my materials for making these bath bombs. I got my citric acid from a web site of a company called nuts online. I bought it by the pound amd it just arrived. It is not clumpy. Its a very fine powder. It was the least expensive of any of the sites that I found that carried this product.

  • 125 Lori // Apr 15, 2009 at 6:40 pm

    I have made bath bombs for years for all kinds of gifts. I haven’t purchased molds; I just use mini muffin tins. I press them in, pop them out, and let them dry a bit overnight. Works great.

  • 126 Lori // Apr 15, 2009 at 6:42 pm

    As for keeping them over time…I use almond oil because it doesn’t have a smell like olive oil and is great for the skin. However…it can go rancid, so use them sooner rather than later.

  • 127 Jill // May 14, 2009 at 1:04 pm

    I have just started to make bath bombs and the only thing I could not find were AFFORDABLE molds. After searching, I found 2 great resources!


  • 128 Jill // May 14, 2009 at 1:13 pm

    I live in a WET state, Oregon to be exact and have had some difficulties. The only recipe that works for me is as follows:

    2 Cups Baking Soda
    1 Cup Citric
    1/2 Cup Epsom Salts
    1 Tbsp. Melted Shea Butter (mic 1 min)
    1 Teaspoon Sweet Almond Oil
    Oil from 1 Vitamin E Capsule
    1 Teaspoon Fragrance
    1/4 Teaspoon Wilton Cake Gel Colorant
    3 Sprays Distilled Water
    Separate Dry and Wet, Mix Wet and add SLOWLY to Dry Mixture. When all the mixture is mixed well, then with one hand, spray the distilled Water in and with the other make sure to mix fast with your other hand and then blend slowly for an even distribution of water.

    2 Tips: 1) I color my Epsom salts my desired color in a baggie before I do my batch in order to distribute color evenly – I get speckles, but I like the darker speckles and get a lot of compliments on them. 2) I place soap safe glitter in 1/2 of my mold and I shake the mold to distribute it evenly, then I pack my mixture in. It’s really cute.

  • 129 Jill // May 14, 2009 at 1:25 pm

    The Cheapest place I found for Citric Acid is Mountain Rose Herbs; only $12.00 for 5 pounds.

  • 130 erin // May 24, 2009 at 5:00 am

    hi i bought a Ferrero Rocher box(the plastic ones) and it was in a shape of a heart. Do you think that would do. Because it is just like the circle ones in the picture but in a shape of a heart.

    it could look nice ;]

  • 131 Jules // May 28, 2009 at 7:44 am

    I have purchased bath bomb kits and followed recipes on videos and they never worked for me. I went through 10 pounds of citric acid to find the perfect recipe and I finally found it. DO NOT use Kaolin Clay or Rubbing Alcohol or Witch Hazel or Corn Starch!! They do not work and only add extras to something that does not need it. Rubbing Alcohol and Witch Hazel absorb moisture from the air and can start your bath bomb fizzing due to the reaction to your Citric Acid. Kaolin Clay makes a powdery bath bomb and they will powder all over the place, plus I have noticed that Kaolin Clay overly dries your bomb. Corn Starch is not needed whatsoever; it serves no purpose. When I have used Corn Starch, it simply makes my bath bombs not mold as well as they would without it. Leave it out. You only need 5 ingredients to make a solid rock-hard bath bomb: Baking Soda, Citric Acid, Epsom Salt, Carrier Oil, Distilled Water. That’s it. Of course you will want to add fragrance, colorant and things that are good for your skin. But the five items above will make an indestructible bath bomb. If you are selling Bath Bombs, you want to put your materials money to good use: buy unrefined Shea Butter or Cocoa Butter, high-quality carrier oils, good fragrances, Vit E Soft Gels, Distilled Water and non FD&C colorants. And for those who are worried about fragrance not keeping, the Vit E gel is what you will need for that. Also, for drying times: allow 1 day per 30mm. Therefore, if you are using a 60mm mold, you will need exactly 2 days of untouched drying time. Hope this helps. ;)

  • 132 Jane Church // May 29, 2009 at 2:45 am

    I was just thinking about best bath bomb recipe and instructions and you’ve really helped out. Thanks!

  • 133 helga // Jun 24, 2009 at 4:13 pm

    Hi. Found a cheaper web site for citric acid: Snowdrift Farm in Tucson. I just placed an order for 5#’s @ $8.49. They are having a free shipping on orders over $75.00 until the end of July. Getting ready to try a bomb recipe, wish me luck:-)

  • 134 Siobhan // Jul 23, 2009 at 11:30 am

    I saw that you mentioned Lush, and since you are in Seattle I was wondering if you have tried the bath bombs from Bliss Soaps in Capitol Hill? I love them and they don’t cost nearly as much as the ones from Lush. Plus, they will make up custom batches to order. :)

  • 135 alicia rehburg // Aug 16, 2009 at 6:11 am

    Thank you for your extensive site and sharing with us how to make bath bombs. I would like to take your advice and visit the site you mention for Brenda Sharpe, however, not site comes up. I haven’t found her by google either. Can you help me? Has her site changed?
    Thank you,

  • 136 Gifts From the Kitchen: Save a Penny, Please Many « Foodie Family Eats // Sep 7, 2009 at 6:52 pm

    […] messy and fun and the results are really fabulously fizzy.  If you’re interested check out Not Martha’s great recipes and […]

  • 137 Tonie // Oct 10, 2009 at 1:24 pm

    you can find citric acid here
    very good prices :)

  • 138 Megz // Oct 22, 2009 at 2:40 pm

    Hi there, your link above “best bath bomb recipe and instructions” sends me to a page not found.

  • 139 Kitty // Oct 31, 2009 at 3:31 am

    I found citric acid in our grocery store by the canning goods.

    Thanks for posting the recipe. I will have to try this one. In the past, I have used plastic easter eggs for molds. My daughters and I found shell salad bowls at Target and put the bath bombs in there to look like a pearl, along with a terry cloth fish made out of bright colored washclothes, ric rac and other trims. It was a cute Xmas gift and also used for a housegift and we keep an extra by the tub in the guest room.

  • 140 Ask Doctor » Blog Archive » Episode #113 – Lip Balms, Bath Bombs // Nov 13, 2009 at 1:24 am

    […] Martha tells us how to make Bath Bombs at […]

  • 141 Handmade Gift Ideas Part 1 – Bath And Body | // Nov 23, 2009 at 6:58 am

    […] Bath Bomb Tutorial @ Not Martha […]

  • 142 twin // Nov 24, 2009 at 8:35 pm

    A very interesting site and comments from people who are making bath bombs.
    I am looking for molds that are like golf ball size, not the big ones. I would like to be able to sell like five or six in a package. Could anyone help me or even a meatball scooper
    thanks for any help with this

  • 143 ja**ly // Nov 24, 2009 at 8:43 pm

    I am about to try this recipe this evening, but I wanted to let you know that I really enjoyed your writing style. I chuckled more than once. Down-to-earth, and very clean and well-written. Bath bomb feedback to follow!

  • 144 Tis the Craft Season: Saving Bath Bombs – Quoda’s Space Blog // Nov 25, 2009 at 9:32 am

    […] under my belt and went to make a third today. If you want to know more about making bath bombs, Not Martha has a great guide and some links. The PDF guide I am learning from is not available right now, but it may come back soon… I […]

  • 145 Jennifer from Maine // Dec 2, 2009 at 5:27 am

    I am making and selling bathbombs. I have found a few different ways to make them out there. One with the very little amount of carrier oil as in your recipe and then there is another out there that states using one third cup of oil. This is the one I used. I don’t mind this amount of oils in the bomb but some do. Which recipe is right? And how can you possibly get the material to stick together not using this much oil?


  • 146 kerry // Dec 9, 2009 at 9:28 am

    i am a bath bomb beginner, and my first day at it has proved a little befuddling…they come out great, mixing, mold, scent, etc, until i pop them out of the mold and set them out to dry they become PANCAKES! HElP, what am i doing wrong???? thanks

  • 147 kerry // Dec 9, 2009 at 4:37 pm

    okay…so i figured out the pancake thing-TOO WET, great. so i got them to a really nice dry consistency molded and pressed and everything appeared fantastic…UNTIL an hour or so later and now 2 things are happening: one is that they are cracking mostly down the center, but little cracks here and there around the ball as well. AND some of them have like little explosions in spots, as if a drop of water burst inside or something and set off the fizz, but i don’t know??? Can anyone offer assistance?? THANKS

  • 148 Jessica // Dec 16, 2009 at 6:23 pm

    I’ve had luck using ice cube trays as a mold.

  • 149 Lola // Dec 20, 2009 at 1:24 am

    Hi there, I’m hoping someone can offer me some advice. I’ve been making bath bombs for a while, no problem. I can make a batch in the morning and bag them up within 36hrs. In the last week it has all gone horribly wrong, the bombs look fine on the tray but when you touch them they kind of explode! They’re really dry & crumbly. I can’t work out what’s wrong…. I’m using exactly the same ingredients, same moulds, same essential oils & flowers etc. The only thing that’s different is the weather. It’s snowed this week, would that affect the drying?? My hubby thinks that it would, if it is, what do I do??

  • 150 12 Days: Make & Doodle | gaelick // Dec 24, 2009 at 5:04 am

    […] Champagne Bubble Bath Megan over on has shared a comprehensive and surprisingly straightforward “How To” guide for making […]

  • 151 Jay // Jan 16, 2010 at 11:18 pm

    Hi. Have any of you seen citric acid in the baking aisle of your local supermarket? It may not be specifically designed for this particular use but I use it sometimes and it works absolutely fine.

    I’ve tried layering colours and it has a very pretty effect.

  • 152 Bath Bombs – How To DIY // Jan 20, 2010 at 11:02 pm

    […] Not Martha is by far the best with an incredible, step by step description and great pictures. […]

  • 153 Bath Bombs – How To DIY | Beauty Aware // Jan 21, 2010 at 7:11 am

    […] Not Martha is by far the best with an incredible, step by step description and great pictures. […]

  • 154 Spearcarrier // Feb 19, 2010 at 8:38 am

    Hi there!

    My roommate uses the recipe you have here, including the corn starch. I didn’t know about the possible yeast infection connection.


    Guess what I *always* get if I use the tub after she’s done one of those bath bomb baths?

    … I didn’t used to suffer this much with things like that before.

    Not saying it’s a definite, but am certainly noting the connection and banning her bath bombs until further notice.

  • 155 Heidi // Feb 26, 2010 at 11:34 am

    I love your sugar skull idea, and I think if you mad a bath bomb brain inside a soap sugar skull that would be cool. Then when you are in the tub and you wash off enough soap, the brain inside would explode. Also, for colored bombs (thought I don’t advise on colored bombs because of thr whole tub cleanup) you can dump a pack of coool-aide in your recipe- it is just citric acid and colorant.

  • 156 Focus sur: les bombes de bain : // Mar 18, 2010 at 12:52 pm

    […] […]

  • 157 Amber // Mar 25, 2010 at 9:53 pm

    I read that it works best if you grind up the dry ingredients so they are really fine before making the bath bombs. So, I mixed the baking soda, epsom salt, and citric acid together and threw them in my mini food processor for a few seconds. When I went to take the lid off – POOF – a loud popping sound happened, the lid came off with a force and powder flew out everywhere. It also smelled very hot. I’m no scientist. Any idea what happened there?

  • 158 Kayley // Apr 7, 2010 at 6:41 pm

    re borax: borax is used in tons and tons of bath/beauty/cleaning products we use everyday…and using your numbers provided, you’d need about 1 oz/bomb, and most recipes call for something more like 1/2tsp per batch, with that batch being composed of 2 cups total dry ingredients. so, to get that 1 oz of borax you’d need to use 12 batches of bomb mixture per bath. i’m fairly certain this is a null concern.

  • 159 Homemade Mother’s Day | Just Spotted // Apr 18, 2010 at 8:55 am

    […] a Glass Vase for MomMake a Flowered ClipMake a Bath BombRice Krispie KissesUse Photos to Make Bottle-Cap Magnets & ThumbtacksMake a Silhouette […]

  • 160 Jeanne // Jun 17, 2010 at 5:18 pm

    For molds, I used a cupcake pan lined with cupcake papers and that worked great. I cut some daisies from the garden and put the flower in the bottom of the mold. When unmolded there was a pretty flower on the top of the bomb! I also put some fresh lavender flowers in the mix and that was great too. Just a little messy in the tub, but worth it.
    When mixing, add the liquid VERY slowly, whisking the whole time, to prevent the citric acid from going off

  • 161 Beth // Jun 30, 2010 at 1:46 pm

    Enjoyed reading about your bath bomb adventures, best of luck with your skull and brain idea, sound great! I noticed you had mentioned something about a meat-baller…IT WORKS GREAT!! (for me). I’ve used my mini food processor without any problems. I’ve also used a hand held/operated sifter. It works just fine, can make your arm tired, but it’s exercise and works out your hand and arm, bonus!! I would NEVER think about using a dry cool-aid packet to color bath bombs… dust a little cool aid powder on your counter top, sprinkle a few drops of water on it and after a few minutes wipe it up… (got color stain??) and lastly I’ve considered using flower petals, leaves, glitter etc… in my bath bombs, but the after clean up mess just wasn’t appealing…so I thought why not put “those” type of bath bombs into a piece of nylon stocking and tying it off with a nice bow/ribbon?? It should catch most everything & clean up is a snap! Happy bath bombing!!

  • 162 Annie // Jul 21, 2010 at 7:07 pm

    I get all of my makeup/brushes from this site and they also have ingredients for bath bombs that are cheap! Also has a starter kit.The site has a really good reputation too. Thought this would help any wanting to making bath bombs!

  • 163 Craft Round-up « Curious Vessels // Jul 30, 2010 at 8:09 pm

    […] make these, I used a combination of this recipe and this one, and I have to say that mine did not turn out well. I […]

  • 164 LCMayzl // Aug 13, 2010 at 6:55 am

    I’ve been making and selling bath and body products for a few years now, and this year decided to try bath bombs…using my foaming bath whip as frosting, and shaping the bombs in a cupcake mold.

    The recipes I’ve used all use witch hazel spritzer, and well, while they have kept shape and dried properly, the witch hazel causes them to be a uniform ugly yellow — looks like bad baby poop…I guess I will try this method using either rubbing alcohol spritz or oil/glycerin spritz.

  • 165 Gourmet Nuts // Sep 28, 2010 at 10:19 pm

    I have both purchased bath bombs and made them myself and I really enjoy just sitting back and relaxing in a hot tub with a nice bath bomb no matter if it’s purchased or homemade:)

  • 166 norma // Oct 15, 2010 at 8:00 am

    I’ve been trying for years to get this bath bomb thing down. I think I finally got it!

    thanks for this wonderful tip!

  • 167 Abbey // Nov 18, 2010 at 1:00 pm

    If you know where any Indian or Pakastan grocery stores are located near you check them out for bath bomb ingredients! Most carry a wide variety of oils, as well as cheap cheap cheap citric acid powder, sometimes labeled as lemon Phool, and dry pigments. the pigments dont show a lot of color dry but WOW when they get wet! a little goes a long way too! Also cake supply shops are great for oils! Look for candy flavoring oils, they come in small quantities but are relatively cheap compared to most essential oils. Also all of the edible glitters and food colors work great for the bath bombs! The edible glitter melts away so no mess in the tub! The paste colors are great, they take a while to mix into the dry ingredients but the results are very nice and no fizzing like liquid colors. I have found various chocolate molds that are super cute for bath bombs and smaller items like face tabs and shower bombs.

  • 168 Misty // Dec 1, 2010 at 12:34 pm

    I was reading the comment about botanicals and i thought that if you wanted to make it functional and look nice for delivery and use you could purchase some of those pretty sachet bags used for potpourri( think i spelled that wrong). the ones with the little ribbon tie that are made of mesh. just instruct the user to drop the entire thing in the tub. Just and idea i thought would work for my own gifts when i try this.

  • 169 Handmade Gifts day 18 – Soak it up « Double Knot Studio // Dec 3, 2010 at 8:39 am

    […] found a great tutorial on Not Martha for making a bath bomb, the best part is almost all the ingredients can be purchased at the grocery […]

  • 170 Frosty // Dec 10, 2010 at 2:13 pm

    Citric Acid can be found on ebay

  • 171 Donna Barr // Dec 18, 2010 at 12:35 pm

    Been saving this recipe until I could drag all the ingredients together. Including my homemade sea salt from Clallam Bay:

    Our co-op — recently used as a model for the county, the state and the USDA — gets me this stuff!

    Thanks for posting the recipe. Now onward to get myself into even more trouble mixing up stuff.

  • 172 Jill // Apr 24, 2011 at 7:41 pm

    For the smaller “pedicure” bombs, I recommend using to order Rainbow Putty Balls:

    I recommend as well for Citric Acid:

    My BB recipe:
    2 cups baking soda
    1 cup citric acid
    1/2 cup kosher sea salt
    1/2 cup extra virgin olive oil
    1 tsp water
    colorant as desired
    Always works, never have had problems crumbling, dries hard.

    Good Luck!

    – Jill :)

  • 173 Wholesale // Jun 13, 2011 at 11:43 am

    Nice! Can you put something in it that will add color to it but not enough to color your skin when you finally use it to bathe? (hope that makes sense lol)

  • 174 Linda // Aug 31, 2011 at 7:17 am

    Hi Megan

    I made bath bombs with kids in a youth club. We used shaped ice cube trays (from Ikea) to make nice wee ones. These went down really well with the kids cos they weren’t too strong and went further therefore saving money.


  • 175 Bubble Bath Secrets // Oct 4, 2011 at 7:50 am

    Hi, Learn how to Make Homemade Bath Bombs?? Check out here:

  • 176 Linda // Nov 7, 2011 at 8:08 pm

    Has anyone tried cupcake wrappers and a cupcake Pan? Cupcakes are trendy and they seem a little more forgiving…could add glitter, sprinkles etc please let me know. Thanks

  • 177 Morgan // Nov 9, 2011 at 10:22 am

    I want to make my bath bombs more chalky and soft but still hard (just like chalk actually). I will be very impressed if someone could figure this out! Love this site by the way.

  • 178 Sheila Wood // Nov 21, 2011 at 7:18 am

    Thank you so much for making my day!
    Your instructions for bath bomb manufacture were so clear and all the tips and tricks were really welcome -it’s nice to know what to avoid before you start – so time saving ;0)
    Thanks also for the wicked sense of humour – I laughed so much, I was in real danger of something going ping. I’m off now to get started. Oh how I love a new project and I’ve got your gingerbread mug houses next on the list. weeeeehhaaa!

  • 179 Sheila Wood // Nov 21, 2011 at 7:20 am

    By the way, it’s almost impossible to buy citric acid powder in the UK at the moment. I searched every outlet in our town and eventually found that it isn’t stocked because drug users use it to cut drugs. One pharmacy let me have some but they were only allowed to sell me 50gms. Tiny bath bombs then :0)

  • 180 Sarah // Dec 1, 2011 at 5:50 am

    Citric Acid can be bought in bulk for super cheap at

    The plastic snap balls I found at my local Michaels store -don’t bother trying to find it through their website, just go inside and ask a sales associate. I would never have found them in the store without asking.

    My bath bombs flattened out, any tips on getting rid of the pancake effect on the bottom when they sit? Possible too wet?

  • 181 Sarah // Dec 1, 2011 at 5:52 am

    Linda –

  • 182 Victoria // Dec 13, 2011 at 8:00 pm

    For anyone who lives in Seattle, there’s a little shop in Issaquah (half an hour away) that carries citric acid called Champion. Save you the expense of shipping :)

  • 183 Jessica // Feb 14, 2012 at 11:35 am

    Citric acid can also be found at Whole Foods. you vcan buy it in bulk or in smaller portions. Almost all ingredients are there!

  • 184 Laurie // Mar 4, 2012 at 5:57 am

    There is nothing available in the URL for the Bath Bomb. Is there another way to get the recipe?

  • 185 Jessica // Apr 3, 2012 at 4:22 pm

    Laurie – I found it at

  • 186 Linda // Jun 10, 2012 at 4:39 pm

    You can by citric acid at Mediterranean food stores

  • 187 Linda // Jun 10, 2012 at 4:40 pm

    Sorry! I meant to say Middle Eastern food stores. Or, kosher stores

  • 188 victoria // Jul 18, 2012 at 5:34 pm

    i have an idea for those who need a ball for the molding, how about some squinkie balls. A squinkie is a child toy that is rubber and shaped as an animal and painted. they each come in a ball and it is sort of easy to open.

  • 189 Nikki // Aug 25, 2012 at 8:40 pm

    This is perfect, thank you much for sharing! I have been taking a lot of salt baths recently and tried a few bombs by Hugo Naturals. I am going to give this a try. :)

  • 190 Soapa // Jan 5, 2013 at 8:29 am

    Soap Goods is a good place to find citric acid. Also Bulk Apothecary has good prices. Tbk trading has good prices on color. It’s nice to see so many people making bath products. I love the bb with botanicals. It’s like bathing in the ocean. A pretend ocean that you can control. Ha! (nice blog btw)

  • 191 Tammy // Apr 16, 2013 at 12:52 am

    Easter eggs work wonderfully! Also, the dollar general store has $1 ice trays which are actually little cube shapes and are silicone…works nicely and really good size for a regular bathtub.
    Citric acid, it took forever to find, but I finally found it at Walmart in the same isle with the Ball canning brand kitchen things. It was in a very small bottle but it was enough for about two batches of bath bombs. Citric acid seems to be so much cheaper to buy online though.

  • 192 Rebecca // Aug 9, 2013 at 12:03 pm I just decided to try making BB today. Got my mold from get this… a coin operated vending machine! 50 cents and voila..out came a plastic toy and a mold..but my BB doubled in size as it dried. NOT GOOD. Guess I will have to start over…lol.. But that’s the fun of it, right? Oh, and I didn’t use your recipe or the other one(s) you featured either so I guess that is why I failed.

  • 193 Diane // Sep 16, 2013 at 4:57 am

    Great instructions easy to read. When I’m on a crunch I got They have Bathbombs and cupcake bombs among other things for the lowest price I found if you include shipping.

  • 194 bcgeogirl // Sep 20, 2013 at 11:16 am

    you can use arrowroot starch instead of cornstarch and it works just as well.

  • 195 Diane // Oct 14, 2013 at 1:34 pm

    borax should not be used.

  • 196 Sophie // May 11, 2014 at 2:25 pm

    @Alex actually Lush’s bath bombs with glitter do not stick to your tub. I bought Phoenix Rising one time, and it has a crapload of gold glitter. I did not find a single speck of glitter in my tub afterwards. And no, glitter with not stick to the tub since it will be washed away with the water from your tub when emptying it.

    Hope this helped!

  • 197 Laura // Dec 6, 2015 at 10:19 am

    I found citric acid at Walmart with the canning supplies

  • 198 Wika // Dec 13, 2015 at 2:59 am

    When I spoke to a Lush representative they said their glitter was made from seaweed.

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