From the maker:

I grew up not being able to take a bath, due to sensitive areas. After lots of research, I found a recipe that works for me. My husband, who is a gynecologist, confirms every ingredient is safe. I also didn't want just a fizzy, I wanted skin treatment and that is what you will get.

Ingredients: Baking Soda, Cream of Tarter, Kaolin Clay, SLSA, Citric Acid, Buttermilk Powder, Avocado Oil, Poly 80 (keeps tub from staining) and H2O.