Mineral, purified in laboratory.
Forms a stable physical barrier against UVB rays and, less efficiently, against UVA rays. May be used as a pigment or thickening agent on cosmetic formulas. Highly stable and non-irritant for the skin1. Sunscreen like Ombrelle, Vichy Capital Soleil, La Roche-Posay Anthelios, Avène, RoC Minesol. Skin Therapy Letter, 1997, volume 2, number 5.