Easy Cupcake Bath Bombs are a Treat to Make!

If you want to make awesome cupcake bath bombs, you have got to try these fun mermaid bath bomb cupcakes or unicorn bath bomb cupcakes–they’re such fun to make and so cool to use!

how to make birthday bath bombs
These fun cupcake bath bombs are so perfect as mermaid bath bombs or unicorn bath bombs–and they’re so easy to make!

Cupcake Bath Bombs

Here at Ruffles and Rain Boots, we have so much fun making bath bombs and homemade soaps, so when the kiddo asked for mermaid bath bomb cupcakes and unicorn bath bomb cupcakes, well, of course I hopped right on that! Not only are cupcake bath bombs fun for me to have in the bath, but if I can make some that make bath time more fun for her, well, I’m doing it, hands down!

RELATED READING: MALEFICENT CUPCAKE BATH BOMBS

Plus, these adorable cupcake bath bombs make the best gifts. And then you’re giving the gift of relaxation–how cool is that?! If you’re ready to make the most fun bath bombs you’ll make this year, let’s get started.

fun cupcake bath bomb craft

All Mermaid Bath Bombs and Shower Fizzies

Before we get started, you might want to check out all of my mermaid bath bombs and sugar scrubs here.

collage of mermaid bath bomb recipes and mermaid sugar scrub tutorials in squares
Mermaid bath bombs and scrubs are easy, colorful, and safe to make on your own.
No Time to Make This Now? Pin it for Later

You’re busy, I get it. Pin this to your favorite easy DIY ideas board on Pinterest and it’ll be here for when you’re ready.

photo collage of whipped soap and bath bomb with text which reads whipped soap topped cupcake bath bombs

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Tips to Make Mermaid or Unicorn Bath Bomb Cupcakes

  • Be sure to let your cupcake bath bombs to dry fully before using them, because they’ll be fizzier. Generally, I recommend letting them dry for at least 24 hours or more if you live in a humid environment or it’s cold out.
  • Always store your DIY bath bomb cupcakes in an airtight container until you’re ready to drop them in the tub. The moisture in the air can make them significantly less fizzy. One thing I like to do is store my bath bombs in a pretty air-tight container like an apothecary jar. Not only is this great for keeping the bath bombs ready-to-use, but it’s a really cute packaging if you plan to gift them!
  • Mermaid Bath Bomb Cupcakes
    • Stick with purple, pink, blue and shades in between for each of the primary colors of these bath bombs.
  • Unicorn Bath Bomb Cupcakes
    • Stick with yellow, green, purple–well, the whole rainbow for these awesome bath bombs.
make a whipped soap with a bath bomb like a cupcake

How Do I Make Cupcake Bath Bombs?

I’m so glad you asked. Below is our written tutorial.

Yield: 12 Fun Cupcake Bath Bombs

Cupcake Bath Bombs

easy cupcake bath bomb recipe

These are the funnest cupcake bath bombs you'll find. Bubbly, fizzy and just straight-up awesome, you can make them into mermaid bath bomb cupcakes or unicorn bath bomb cupcakes with just a couple of tweaks!

Materials

Bath Bomb Cupcakes

Whipped Topping

Instructions

  1. In a large mixing bowl, whisk together the baking soda, citric acid and cornstarch.  
  2. Add the coconut oil, Polysorbate 80 and scented oil then mix well. You may need to use your hands to crush lumps and make sure everything gets well mixed. The mixture is ready when it holds together like wet sand when you press it together in your hands.
  3. Add in your color. Start with 1-2 drops of color and mix it in. If you want a darker color, add 1-2 more drops at a time, mixing between. 
  4. Fill each cavity of a muffin tin and press mixture into it firmly until the cavity is filled to the top. 
  5. Allow the cupcake bath bombs to dry a minimum of 24 hours. If your climate is wet or cold, allow an additional 24 hours. My rule of thumb is that when it is hard to the touch, they are ready for the frosting! To remove from a metal muffin tin, gently run a knife around the outer edge and release.
  6. To make the whipped topping, combine whipped soap base, scented oil and glycerin and mix on low speed until fluffy. 
  7. Melt the soap base in 30-second increments, stirring between each increment, until the soap is melted. Then allow the soap to cool for about a minute. 
  8. Combine melted soap base and cornstarch on high speed for 1 minute or until it forms stiff peaks like a meringue.  If the frosting is not stiff, add additional cornstarch.
  9. Divide the whipped soap mixture into 3 small mixing bowls and add one color to each bowl. Mix until the color is consistent throughout then place in the frosting bags.
  10. Frost cupcake bombs as with an edible cupcake. Add a few sprinkles on top. Allow to dry for 2-3 days then enjoy!

Notes

For more fun bath bomb recipes, visit Ruffles and Rain Boots!

Did you make this?

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More Fun Bath Bomb Recipes You Might Like

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unicorn bath bomb cupcake on a pink background with text which reads cupcake bath bombs with whipped soap frosting

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