Bath bomb dyes are specially designed for easy use in home-made fizzy bath bombs. Simply add a small amount of powder dye to the dry mixture and gradually stir in, adding more if needed, until you achieve the desired shade. The powder replaces baking soda throughout the whole process and should make up no more than 0.2–0.4% of the total weight of the bomb – the more powder you add, the less baking soda you should use. The colour is stable in water and does not leave unwanted marks on the bath. Thanks to these dyes, you can create unique designs, layered effects or subtle colour gradients on your bath bombs. You can find a detailed guide to making a fizzy bath bomb here; for more information, not only on the basic ingredients but also further tips, see this article on fizzy bath bombs.

You can find the basic components for making fizzy bath bombs here. Also take a look at the fizzy bath bomb moulds category and choose the right one for your creations. You will also find fragrance oils useful. Fizzy bath bombs also make a great gift.