How to make bath bombs at home

Have you ever thought how cool it would be to create a bath bomb that's exactly how you want it? It's definitely possible.

We've tried and tested making bath bombs ourselves and we want to share a cool recipe with you too. It's also very easy to personalise by changing the essential oils and colourings. The result is a natural bath bomb with no ingredients to worry about. 

What you need (for 1–2 bombs)

• 70g baking soda
• 25g cornstarch or potato starch
• 25g citric acid
• 30g Epsom salt
• 2 tablespoons of water
• 10 drops of essential oil (your choice)
• 6-8 drops of soap dye (your choice)
• Bath bomb mold

Note: the starch sold in our shop is specially modified for this use. Bath bombs may fail with regular grocery-store starch.

How to make it

1. In a large bowl, combine baking soda, starch, citric acid, and Epsom salt. For best results, sift the dry ingredients.
2. Add water and essential oil gradually—a teaspoon at a time or with a spray bottle. Aim for a wet sand texture: holds together when squeezed but isn’t wet.
3. Mix in the colorant and a couple more drops of oil if you want a stronger color or aroma.
4. Pack the mixture firmly into the molds to avoid air gaps. Silicone molds work, too.
5. Let the bombs dry at least 6–8 hours (ideally overnight) in a warm, dry place. After unmolding, allow another 24 h to harden.
6. Drop into a warm bath and enjoy a fragrant, relaxing soak

Personalization ideas

• Aromas: lavender (calming), eucalyptus (clearing), sweet orange or lemon (uplifting), peppermint (cooling).
• Add-ins: dried petals, oat flakes, a little plant oil (extra softness).
• Visuals: tint with soap colorants or create a marble swirl by splitting the batch into two colors.

Tips & safety

• If the mixture starts fizzing in the bowl, you’ve added too much liquid—add a bit more baking soda and starch.
• Store airtight to prevent moisture absorption and preserve scent.
• Patch test first if you have sensitive skin or are trying new essential oils.

You can find all the raw materials safely on our website. It should be noted that the starch found in our shop has been specially modified for this purpose, which means that you may not be able to make a bath bomb with potato or corn starch you buy in the grocery store.

Try this recipe and let us know how it went in the comments. Here's to fantastic bath bombs!

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