As it comes out, these ball shape are nothing more than an nontoxic mix of fizzy ingredients, salts, colorants, oils, and some surprises (flower petals or glitter, toys, for instance). Cosmetic chemist once breaks it down like this: In water, the sodium bicarbonate in the bath fizzer reacts with the citric acid to release carbon dioxide gas. This is same as what happens when you drop an Alka-Seltzer tablet into water.

The bath fizzer starts to break apart as this happens, releasing with it the colorants, fragrances, and skin-conditioning ingredients, like bath salts and bath oils. The combination turns your bath water a mind-blowing mix of colors and scents your whole bathroom, but as far as your skin is concerned, they’re in essence no different from adding a splash of bath oil or bath salt into the water. “Bath fizzer can add oils to a bath, and the oils can make our body more moisturizing,” says Mr Chang, a dermatologist in our factory. “. Bath fizzer fall into the same category as baths themselves: less about function and more about the sensory experience. So what you need is to throw your bath fizzer into your tub and enjoy your bath.