INCI: Zinc Oxide, USP
(USP: United States Pharmacopeia, a legally recognized compendium of standards for drugs, published by the United States Pharmacopeial Convention, Inc.)
Zinc Oxide is a natural mineral. This white powder lends coverage, adhesion, and UV protection when added to skin care products. Zinc oxide is the broadest spectrum UVA and UVB reflector approved for use as a sunscreen by the FDA and is allowed in concentrations up to 25%.
USP is a scientific nonprofit organization that establishes federally recognized standards for the quality of drugs, dietary supplements, and foods. It is the only such organization that also offers voluntary verification services to help ensure dietary supplement quality, purity, and potency. USP standards are used in more than 140 countries and are federally recognized per the Federal Food, Drug and Cosmetic Act and the Dietary Supplement Health and Education Act.