Sheer Mineral UV Defense SPF50 from Skinceuticals is a broad spectrum UVA/UVB and SPF50 protective filter. This fluid formula contains extracts of brine shrimp, a plankton extract that helps improve the skin's natural defenses against UV radiation and cellular stress caused by heat. Its fluid, silky texture is easy to apply and provides your skin with a smooth feel and a matte finish. It uses key technologies, such as 6% Titanium Dioxide and Artemia Salina. Furthermore, its main benefits are broad-spectrum UVA/UVB protection, and the micro-fine particles of 100% mineral titanium dioxide that form a barrier on the skin, protecting it from UVA/UVB rays. It is water and sweat resistant for up to 40 minutes. And brine shrimp increases the skin's resistance to UV radiation and cellular stress caused by heat. Apply before sun exposure. Reapply frequently and generously to maintain protection, especially after bathing, in case of sweating or after drying the skin. Protect yourself from the sun: sun exposure increases the risk of skin cancer and promotes premature skin aging.