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DIY BATH bOMBS
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Hard Bath Bomb Recipe That Won’t Leave an Oily Ring

If your bath bombs crumble, dent easily, or leave a greasy ring around the tub, this recipe fixes those problems. This hard bath bomb recipe uses kaolin clay for strength and polysorbate 80 for easy cleanup, so you get a firm bath bomb that fizzes beautifully without the mess.
Prep Time5 minutes
Cook Time3 minutes
Total Time8 minutes
Servings: 2 bath bombs
Cost: $5

Equipment

  • Bath bomb mold

Ingredients

Instructions

  • Mix the Dry Ingredients

    In a large bowl, combine Baking soda, Citric acid, Epsom salt, Kaolin clay and SLSA
    Mix thoroughly, breaking up any clumps. The mixture should look uniform and smooth before moving on.
    Tip: Wearing a mask is recommended when handling SLSA since it is a very fine powder.

  • Mix the Wet Ingredients

    In a the same container, combine Sweet almond oil, Polysorbate 80 and Fragrance oil
    Stir well so the oils are fully combined.

  • Add Color

    Add a small amount of lake dye to the mixture
    Mix thoroughly until the color is evenly distributed and there are no specks.
    Start with a small amount and add more if needed.

  • Add Binder

    Lightly spray the mixture with either Rubbing alcohol OR Witch hazel
    Mix after each spray until the mixture holds together when squeezed.
    The mixture should hold its shape without crumbling apart.

  • Fill the Molds

    Overfill each side of the mold slightly, then press them together firmly.
    Pressing firmly helps create harder bath bombs.

  • Remove from Mold

    Carefully remove one side of the mold, then gently remove the other side.
    If the bath bomb sticks, let it sit in the mold longer before trying again.

  • Let Dry

    Let bath bombs dry for at least 24 hours before using.
    Store in a dry place away from humidity.