I've a very white skin. Yesterday I passed a few hours under a tree in shadows. When I went back home I was surprised UV rays passed through the leaves of the tree and reached my arms, nose and more. I had used a sun protector cream for my neck but nothing else. My legs, arms and face are very red now. Yesterday my girlfriend put me some (feminine I guess) face cream (containing E vitamin) on the red parts of my body. What should I do in case of skin burning by the Sun? Should I buy a special liquid? Or is it worthless since some DNA in my cells is already damaged and nothing can cure it? Or maybe it continues to damage itself and I can reduce the damages?