Your bath bomb will consist of one or more of the following ingredients: Baking Soda, Citric Acid, Kaolin Clay, Colloidal Oatmeal, Shea Butter, Grapeseed Oil, Fragrance/Essential Oils, Pink Himalayan Sea Salt. The bath bomb colorant if colored consists of cornstarch, Ultramarine, Calcium Lake, Mica, and Titanium Dioxide.
***The colors should not stain your tub in anyway. If you have any concerns do a test prior to usage.***