How To Make Rainbow Unicorn Bath Bombs

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These Rainbow Unicorn Bath Bombs are a thoughtful and fun homemade gift or party favor for unicorn parties. Of course, you could always make extra to add to your own pamper product collection!

3 rainbow-colored bath bombs with a unicorn in the background. Text overlay says"Rainbow Unicorn Bath Bombs". Same craft images featured throughout from various angles, and with different text overlays, unless otherwise described.

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Rainbow Unicorn Bath Bombs

The full list of materials, tools, and instructions is found in the printable tutorial card at the end of this post. I highly recommend reading the blog post all the way through before starting this project to ensure that you have everything required and understand the steps and timings involved.

Making your own pamper products is a lot easier than you think! And in the long run, it can work out a lot cheaper too.

Yes, there is an initial outlay for the supplies, but you’ll be able to make so many, and they’ll end up paying for themselves.

Whether you make these rainbow unicorn bath bombs for yourself or to give them as gifts, you’re going to have so much fun!

Rainbow Unicorn Bath Bomb Supplies

Materials & Tools Used in This Craft

The complete list of supplies, which may include basic crafting items that you already have can be found in the tutorial card at the end of this post. For your convenience, I’ve linked any notable materials and tools needed for this project to Amazon below.

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Rainbow Unicorn Bath Bombs

More Cosmetics Crafts

Looking for more homemade cosmetics to make? Here are some more for you to check out! Just right-click and open a new tab to read next!

I’ve shared lots of great craft ideas on The Purple Pumpkin Blog over the years, in fact, there are 100+ crafts to make and do at home that you can try!

Homemade Rainbow Unicorn Bath Bomb

How Do I Make Rainbow Unicorn Bath Bombs?

Just check out the how-to card below with full materials, tools, and instructions. Any demonstration photos do not print out to save your ink.

How to Make Unicorn Bath Bombs

Rainbow Unicorn Bath Bombs

Yield: 3
Active Time: 1 hour
Additional Time: 1 day
Total Time: 1 day 1 hour
Difficulty: Intermediate

These Rainbow Unicorn Bath Bombs are a thoughtful and fun homemade gift or party favor for unicorn parties.


  • 2 cups baking soda
  • 1 cup citric acid
  • 1/4 cup cornstarch
  • 2 tablespoons bentonite clay
  • 2 tablespoons Milk and Honey Epsom salts
  • ⅓ cup coconut oil
  • 1 teaspoon polysorbate 80
  • 2 tablespoons cocoa butter
  • 10-20 drops cardamom essential oil
  • 10-20 drops cedarwood essential oil
  • 1-2 tablespoons of purple, blue, pink, yellow & green mica colorant
  • 1-2 teaspoons of white cosmetic glitter in each of the smaller bowls


  • Stainless steel bath bomb molds
  • Mini muffin tin (optional)
  • Spray bottle filled with rubbing alcohol
  • 1 large mixing bowl
  • 5 small bowls


  1. Place the baking soda, bentonite clay, citric acid, Milk and Honey Epsom salts, and cornstarch in a large mixing bowl and whisk together.

    Step 1 - Mixing Dry Bath Bomb Ingredients
  2. Add the coconut oil, cocoa butter, and polysorbate 80 to the dry ingredients and whisk together.

    Step 2 - Adding Wet Ingredients to Dry
  3. Add the essential oils and glitter to the bowl and mix well. You may need to use your hands to break down any lumps and make sure everything is mixed in. The mixture is perfect when it holds together when you press it into your hands and feels like wet sand.

    Step 3 - Adding Essential Oils & Glitter
  4. Divide the mixture into 5 smaller bowls. Using 1 tablespoon of each color mica, stir into each bowl so you have five different colors.

    Step 4 - Adding Colored Mica to Mixture
  5. Layer the mixture into each side of your bath bomb mold until the mixture is slightly overflowing. Press molds together and grind gently to remove the excess mixture. Leave to dry for a minimum of 24 hours. Gently tap each side of the mold to release the bombs.

    Step 5 - Layered Bath Bomb
  6. Store bath bombs in a cool and dry place to prevent premature fizzing. On average, you can store bath bombs for 6 months.

    How to Make Unicorn Bath Bombs

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