Light Weight soft texture of Vince SUN Block combines anti-UVB filter with Titanium dioxide.Titanium dioxide  works as a UV filtering ingredient in sun blocks - it helps protect a person's skin by blocking absorption of the sun’s ultraviolet light that can cause sunburn. Ultravoilet (UV) rays from the sun can damage the cells in your body. Over a period of  time, darkening of the skin occurs, which is very "patchy" and uneven in the Asians. It has never been more important to take care of your skin! Vince Sun Screen SPF 50 is the latest scientifically developed moisturizing total sunblock lotion, containing titanium dioxide, which offers maximum protection against  UVA & UVB rays.