Michael Lauren Sunscreen provides superior protection against UVA and UVB rays, known as the sun's harmful rays to the skin. It helps prevent sunburns and rashes, as well as the formation of skin spots and skin damage. It is water based. It helps your skin gain a healthier appearance. Michael Lauren +50 SPF sunscreen has been dermatologically tested. Not tested on animals. While fighting the most intense stains, Pa+++ provides high filter protection. Repeat the application at 2-hour intervals even in cases where there is no contact with water.