Sheer Physical UV Defense SPF 50 is an ultra-sheer 100% mineral sunscreen fluid that is formulated with titanium dioxide, a broad-spectrum mineral filter, and artemia salina, a plankton extract to help boost the skin’s natural defenses to UV- and heat-induced stress. As one of the best physical sunscreens for the face, this sheer sunscreen offers daily broad-spectrum protection for all skin types, including sensitive. This silky sheer fluid spreads easily and dries quickly, leaving no residue. Dermatologist-tested for safety.