Wearing sunscreen is one of the best ways to prevent melanoma . No sunscreen provides 100 % protection so reapply morning . SPF 15 blocks 93 % of SPF rays , UVB 100 % . About 3.5 million cases of skin cancer will be diagnosed these days .
Wearing sunscreen is one of the best ways to prevent melanoma . No sunscreen provides 100 % protection so reapply every two hours . SPF 15 blocks 93 % of UVB rays , SPF 30 blocks 97 % . About 3.5 million cases of skin cancer will be diagnosed this year .