Bath Bomb Recipe without Cornstarch (2024)

FAQs

What can I use instead of cornstarch in bath bombs? ›

Substitutes for Cornstarch

Cornstarch is what makes your bath bombs harden. If you want to leave it out, you need to substitute an ingredient that will have the same effect. Kaolin clay or tapioca starch are good alternatives.

Another ingredient that is often used in homemade bath bombs is cornstarch. This ingredient can act as a dry "filler" that gets mixed in with the reactive baking soda and citric acid in the bath bombs.

Oils are a great way to moisten bath bombs and add skin-loving properties. Start with about 0.5 ounces per pound. Some crafters use 99% isopropyl alcohol, but it can dry the bath bombs out so they're more likely to crack. Try a combination of oil and alcohol to hold the mixture together.

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Well, cornstarch can have a lot of functions for bath bombs. They are commonly found in traditional recipes for good reasons. Cornstarch is a good hardener and scent fixative. However, one can still make a good bath bomb even without cornstarch.

My bath bombs are cracking. What do I do? Your mixture is too dry. Add a dash of 91% rubbing alcohol and mix well.

Bath Bomb Recipe Hardeners

Many recipes use either a starch, a clay, or cream of tartar to harden the final product. Our Bath Bomb and Fizzy Base contains cornstarch as a hardener. Some recipes use tapioca starch. I like to use a combination of Kaolin Clay and cream of tartar.

Two of the key ingredients to a bath bomb are citric acid and sodium bicarbonate. You might also know sodium bicarbonate by its more common name, baking soda. These two ingredients are what cause the impressive and delightful fizz when the bath bomb enters the water.

What does cream of tartar do in bath bombs? ›

It helps to stabalise bubbles and can bulk out the citric element in bath bomb recipes or even replace completely. Cream of tartar is often chosen as an additive in formulations as it can help to harden products. Also added to toiletry products for it's 'creamy' feel.

For the milk I incorporated some milk powder into the bath bombs, which gives them the loveliest, creamy, milky froth when they fizz up in your bath.

Bath bombs crumble or fall apart if too little force or too much force is applied during the moulding process. They will also crumble if they are too wet when removed from the mould. Moreover, if the bath bomb mixture is too dry when formulated it may disintegrate on release from the mould.

Bath Bomb Recipe Hardeners

Many recipes use either a starch, a clay, or cream of tartar to harden the final product. Our Bath Bomb and Fizzy Base contains cornstarch as a hardener. Some recipes use tapioca starch. I like to use a combination of Kaolin Clay and cream of tartar.

The cornstarch in a bath bomb has just one job: It slows down the reaction. By binding to the baking soda as well as the citric acid, the cornstarch slows down the rate at which both of them dissolve. The effect is that the fizziness may last 3 or 4 minutes, instead of only seconds, Wood-Black said.

Yes, you can make bath bombs without cornstarch. The bath bombs will dissolve more quickly, but as long as you still have baking soda and citric acid, you can make bath bombs.