Check labels for the term broad-spectrum . Wearing sunscreen is one of the best ways to prevent melanoma . No sunscreen provides 100 % protection so once every two hours . SPF 15 blocks 93 % of UV rays , SP 30 provides 97 % . About 1 million cases of skin cancer will be diagnosed this year .
Wearing sunscreen is one of the best ways to prevent melanoma . No sunscreen provides 100 % protection so once every two hours . SPF 15 blocks 93 % of UV rays , SP 30 provides 97 % . About 1 million cases of skin cancer will be diagnosed this year .