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How to Make DIY Bath Bombs

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Homemade bath bombs are a fun, easy treat that you can enjoy yourself or make as a gift. Using common, budget-friendly ingredients, I’ll show you how to make bath bombs at home. They’re a fun project to make with kids, too!

diy bath bombs with title text "easy homemade bath bombs"

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Bath bombs have become a hugely popular product to brighten at-home self care. They make bath time fun for kids and relaxing for adults. This DIY recipe allows you to enjoy the luxury at home without the expensive price tag.

Most of the ingredients in bath bombs can be found in your kitchen already. If not, they are ingredients that you should stock up on because they can be used in MANY other recipes and applications around the house.

Dry Ingredients

Corn Starch: Corn starch is found in the baking aisle.

Citric Acid: Citric acid is a natural ingredient made from citrus fruit. This, mixed with the baking soda, is what makes the bath bombs fizz.

Epsom Salt: Epsom salt is the common name for magnesium sulfate. You can find it online or in the pharmacy section of your grocery store. It is wonderful as a soak for sore muscles.

Baking Soda: Baking soda can be found in the baking section of your grocery store. I prefer to buy it in bulk because it has so many uses around the house from cleaning your garbage disposal, eliminating odors, and even in cleaning laundry. It also helps make the bath bombs nice and fizzy.

Mica Powder: Mica powder is a natural soap colorant that is safe for use in bath bombs. We do want to use the least amount possible, though, to obtain the color you want in your bath bombs. It is also completely optional in this recipe. Also, feel free to use any color you like.

Dried Orange Peel: To make dried orange peel, zest three oranges and allow the zest to dry, in a single layer, at room temperature for two days. You can also find it in the spice section of your grocery store.

diy bath bombs and oranges on colorful placemat

Wet Ingredients

Essential Oils: Essential oils are optional, but they add a lovely scent to your bath. Feel free to skip them if you are sensitive to fragrances or make sure that you use an oil that is safe for use on the skin. I have chosen to use Orange essential oil in this recipe, but you can use any oil you wish. Lavender or Tea Tree oil would be wonderful.

Coconut Oil: Coconut Oil is the liquid that will hold the bath bombs together. Warm it so that it is a liquid. You can also use Almond oil.

Water: Feel free to use regular tap water.


  • Large Bowl
  • Small Bowl
  • Measure cups and measuring spoons
  • Whisk
  • Rubber Scraper
  • Bath Bomb Molds

How to Make Bath Bombs

Measure out all of your ingredients. Choose what color mica powder (optional) you would like to add to your bath bombs, which essential oils you would like, and if you want to add any dried ingredients such as orange peel or dried lavender. If you’re sensitive to fragrances, you can leave out the essential oils and color all together.

diy bath bomb ingredients measured into containers on counter

Combine corn starch, citric acid, baking soda, epsom salt, and mica powder in a large bowl.

diy bath bomb recipe ingredients in glass bowl with whisk

Whisk everything together well to completely combine.

corn starch, epsom salt, and baking powder in glass bowl with whisk

Combine the melted coconut oil, essential oil and water into a small bowl, whisking well to incorporate.

bottle of orange essential oils being poured into a glass bowl

Slowly (and I mean SLOWLY) pour the oil mixture into the dry mixture so it does not fizz too much. Stir and mash together until completely incorporated and the mixture looks like wet sand.

bowl of orange diy bath bomb mix with white scraper

Press the mixture into the two mold halves, generously packing it in there. At this point, you can even include small toys for a fun surprise for kiddos.

Twist the two halves together to close, and allow to dry for at least 24 hours.

To remove your bath bombs from the molds, tap on the outside of the mold and twist to separate.

Store in an airtight container for up to six months. You can also wrap them in plastic wrap. If you want to get really fancy, you can use shrink wrap sleeves to wrap your bath bombs. Heat them with a blow dryer or heat gun to shrink the wrap around your homemade bath bombs.

diy bath bomb packed into bath bomb mold

When you’re ready to use the bath bomb, simply drop in water and let it fizz and dissolve. It should take about 30 seconds for it to dissolve completely.

diy bath bomb dissolving in bowl of water

More DIY Projects

How do Bath Bombs work?

The citric acid, baking soda and corn starch all react with water to provide the fizzing. Epsom salt provides a soothing soak to relieve muscle pain and even constipation. The essential oils provide a relaxing or invigorating scent depending on what you use, and oil moisturizes your skin. It’s like a full spa treatment in one bath bomb.

I’m allergic to perfumes and fragrances.

You can absolutely make this recipe without essential oils or colorants. Just prepare the recipe and leave out those ingredients for a allergy-friendly bath bomb.

Are bath bombs safe for kids?

The ingredients in this recipe are safe, even for sensitive skin. As with any bath product, you may want to do a patch test to make sure that your child’s skin does not become irritated. This recipe does include Epsom salt which is sometimes used as a soak to relieve constipation, however it is a very small amount in one bath bomb. For kids under 10, I recommend limiting the time in the bath to 20 minutes and do not use bath bombs with kids under 3.

My mixture is fizzing a lot when I add the liquid. What is wrong?

The baking soda and citric acid will react with the liquid when it is added. It is important to add the liquid mixture very slowly so that it doesn’t fizz all at once. Even if it does bubble and fizz, the liquid measurement in this recipe is so small that you will still have a fizzy bath bomb once dried.

How long will homemade bath bombs store?

Once dried, store your bath bombs in an airtight container so that moisture doesn’t get in. Your bath bombs will last for at least 6 months.

DIY Bath Bomb Recipe

Yield: 5 bath bombs

DIY Bath Bomb Recipe

square image of diy bath bombs with whole and sliced oranges

Easy DIY Bath Bombs are a fun craft that kids and adults alike will love to make, and they make a wonderful homemade gift.

Prep Time 20 minutes
Total Time 20 minutes


  1. In a large bowl, combine corn starch, citric acid, epsom salt, baking soda, mica powder (optional), and dried orange peel. Whisk to incorporate completely.
  2. In a small bowl or measuring cup, whisk together coconut oil, essential oil, and water.
  3. Very slowly add the oil mixture to the dry ingredients. Pouring slowly helps make sure the mixture fizzes as little as possible. Mix together until it resembles wet sand and everything in fully incorporated.
  4. Transfer the bath bomb mixture into bath bomb molds, making sure to press the mixture tightly into each mold half. Overfill a little to ensure that the two pieces stick together when pressed together. Press the mold pieces together and twist until closed.
  5. Allow the bath bombs to dry for at least 24 hours.
  6. To remove the bath bombs from the molds, tap the outside of the mold gently and twist each side of the mold and pull apart to remove the bath bomb.
  7. Store bath bombs in an airtight container or wrap in plastic wrap.
  8. To use the bath bomb, simply drop it in water and watch it fizz and dissolve.


Feel free to play with essential oils and mica powder to customize different looks and scents. Lavender essential oil and dried lavender would make a great, calming bath bomb.

For an added treat, you can even press a toy into the middle of the bath bomb before pressing the two halves together. The toy will be revealed when the bath bomb dissolves in water.

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By on September 21st, 2020

About Sarah

Hi, I'm Sarah. The voice behind Feast for a Fraction. I've been a penny-pincher all my life, but still have a taste for nice things. I'm here to show you that you can eat (and live) well on a budget. From recipes and DIY tips to ways to make extra money, we'll be in control of our budgets together!

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43 thoughts on “How to Make DIY Bath Bombs”

    • Hi, LeeAnn. It does color the water a little bit, but not as much as color tablets. You can always add more mica powder to make the color a little stronger. I think it is a great replacement, though, as kiddos will have fun watching the fizzing. 🙂

  1. Hi. Is the water necessary? And is the alcohol necessary? I only found 70% alcohol.
    I’ve seen a recipe for 1Tsp of water for the same amount of dry ingredients. Why does it differ? I’m concerned because my bath bombs have been hit or miss and I don’t know why.

    Thank you.

      • Hi, Amber. I chose to use water in this recipe rather than alcohol. You can absolutely use Isopropyl alcohol in place of the water. I found that if the water is added slowly, it doesn’t activate the bubbling and it’s an ingredients more readily available for most people.

    • Hi, Larry. I’m sorry for the late response. Yes, you can use liquid coconut oil in this recipe. The dry ingredients will absorb the oil and it won’t affect the finished bath bomb.

  2. Hey! Is it necessary to add water? I’ve tried this and when I added water the mixture just kept expanding and would ruin the whole thing.

    • Hi, Linda. The liquid is necessary to dampen the mixture enough for it to stick to itself while drying. You can try Isopropyl alcohol instead of water, or pour the water/oil mixture in very, very slowly, stirring as you add it.

    • Hi, Sam. Using a 2.5 inch mold like what I linked to above will give you approximately 5 bath bombs depending on how well the mixture in packed. If you use a smaller mold, you’ll be able to get more bath bombs. You can even double the recipe if you’d like to yield more.

  3. when you put this in the bath, is it a strong enough smell that it marinates in the room. do you also smell like that when you leave the bath

    • Hi, Taylor. This bath bomb is very subtle. It contains dried orange zest and a bit of orange essential oil. So, no it won’t permeate the room and you won’t notice a strong lingering smell.

    • Hi, Mehar. You can use food coloring in very small quantities. I would use 1-2 drops at a time and keep the color fairly light. You don’t want to use too much that it will stain skin or the bathtub.

  4. Hi! I am hoping to make this with my students so I am trying to budget and plan ahead. Can you tell me approximately how many this recipe makes?

  5. I really enjoyed making this recipe with my kids. Is it normal that the mica powder floats on the top of the bath with the oil? And then leaves a bit of a ring around the tub? I’ve been finding kind of frustrating to clean after the bath drains.

    • Hi, Caleb. I haven’t experienced the mica powder floating on top, but I do color and oil residue in the tub afterward that I simply rinse off. Feel free to leave out the mica powder as it is just for color, if you like.

    • Hi, Chella. I haven’t tested this recipe with baby oil, but I don’t see any reason why it wouldn’t work. Let me know how it works if you try it.

    • Hi, Keera. I use bath bomb molds that are approximately 2.5 inches in diameter and this recipe makes 5 bath bombs. You can easily double the recipe or use smaller molds to yield more bath bombs.

    • Hi, Justin. Yes, you can absolutely leave out the orange peel with no other changes to the recipe necessary. I look forward to hearing how they turn out. 🙂

  6. Mica powder completely stained my tub and my kid’s skin. Unfortunately I didn’t test it before making 30 for a birthday party 😭. Use my story as a cautionary tale.

  7. Sarah, you are a kind and patient woman for the fact that you had to answer the question, “How many bombs will this make?” and as many times as you did. (as well as some other 🙄 questions)

    I would have had to fight the urge to answer something like, “well, honey, it can make 1 or 1000 depending upon whether your mold is the size of a marble or the size of a cantaloupe.” Also, I guess no one takes a few seconds to ask themselves,
    “hmmm, I wonder if someone else has posed this question”

    I tip my hat to you, ma’am for sharing this very, very simple to understand, convert, and substitute recipe and for your kind demeanor when answering so many basic questions!

  8. Ok….so I dove in, and I did three batches….the first ones expand a little, the second ones blew up, and the third followed suit. Did I add too much water……wondering why when I put the mixture in the mold that it just kept expanding…….yikes! What a mess! Gonna still try and salvage them as I used sandalwood oil, orange oil etc….so it was an expensive mistake….please let me know what I did wrong. Cheers, Deb


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