PreSun Ultra Sunscreens are made with Parsol 1789 to protect from harmful UVA rays that are responsible for the deep wrinkling of your skin. PreSun Ultra also protects from UVB rays which cause sunburn. 30 times natural UVB protection: Used liberally and regularly, PreSun Ultra SPF 30 Sunscreen provides 30 times your natural UVB sunburn protection and may help reduce the chance of premature wrinkling of the skin caused by repeated and prolonged exposure to the sun. UVA Protection: PreSun Ultra SPF 30 with Parsol Sunscreen provides protection throughout the UVA spectrum. PABA-free: A non-comedogenic, PABA-free and fragrance free formula that provides a high degree of UVB sun protection. This hypo-allergenic product is suitable for sensitive skin. Waterproof: PreSun Ultra SPF 30 with Parsol Sunscreen maintains its degree of protection even after 80 minutes in the water.