Mermaid Bath Bombs

These shimmery mermaid bombs are lots of fizzy fun! Your bath tub will be filled with brilliant aqua colored bath water and topped with a colorful layer of foamy bubbles and sparkles!

Mermaid Bath Bombs

These sparkly bath bombs in brilliant shades of teal, purple, and silver reminded us of the ocean, so we’re calling these ones Mermaid Bath Bombs! (But don’t worry, if you want literal mermaid bath bombs, we’ve got those on our “to-make-soon list” along with mermaid hearts, too!)

Mermaid Bath Bombs

Mermaids are super popular these days, and nothing goes more hand-in-hand with mermaids than water, especially brightly colored ocean blue water with a layer of sparkly frothy “sea” foam!

These pretty bath bombs are perfect for a luxurious at-home spa experience that will leave your skin feeling smooth, refreshed, and hydrated.

Mermaid Bath Bombs

It’s easy to make these homemade bath bombs, and even easier to add the finishing touches of color, sparkle, and shimmer!

Supplies Used to Make Mermaid Bath Bombs

Mermaid Bath Bomb

These DIY bath bombs are sure to be a HUGE hit with your favorite mermaid lover (pssst, it’s totally cool if that’s YOU!)! They also make a wonderful homemade gift idea for friends, family, neighbors, teachers, and more!

For more detailed step-by-step photos and instructions on how to make bath bombs, be sure to check out our How to Make Bath Bombs Guide!

mermaid bath bombs in a bowl

Mermaid Bath Bombs

These shimmery mermaid bombs are lots of fizzy fun! Brilliant aqua colored bath water will be topped with a colorful layer of foamy bubbles and sparkles!
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Servings: 7 Bath Bombs



  • In a large mixing bowl, thoroughly combine the baking soda, cream of tartar, SLSA, and Epsom salt. Stir in aqua mica colorant until completely combined.
  • In a small container, combine the sweet almond oil, fragrance/essential oil, and Polysorbate 80.
  • Stirring constantly, slowly mix the liquids into the dry ingredients until they are completely combined.
  • Add citric acid to the mixture and stir until it is fully incorporated.
  • Test to see if the mixture is a moldable consistency – it should feel like slightly damp sand and hold together when squeezed in your hand.
    If the mixture is not quite wet enough to mold, spritz two to three times with a spray bottle of witch hazel and mix well. Repeat as necessary until the proper consistency is reached.
  • Fill both halves of the bath bomb mold with the bath bomb mixture, making sure to overfill both sides of the mold just a bit. Press both halves of the mold firmly together.
  • Carefully release the bath bomb from the mold (tap the mold lightly with a wooden spoon if needed) and allow it to dry completely for 24-48 hours depending on the temperature and humidity of your location.
  • When the bath bombs are dry and hardened, mix together 1/2 tsp of mica colorant with 1 tsp of isopropyl alcohol. Use a stiff paintbrush to splatter the colors over the surface of the bath bombs. Finish with a light spray of Fairy Duster glitter.


The amount of fragrance oil and/or essential oil that will need to be added to your bath bomb mixture will vary widely depending on what you are using. Generally, fragrance oil can be added by the 1/2 teaspoon until the desired amount of fragrance is reached. Essential oils are often far more potent than fragrance oils, so we recommend adding no more than 15-20 drops of essential oil to each recipe. 

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