By now the importance of adequate skin protection is widely known. Skin cancer is the most common cancer in the United States, and the number of Americans who have had skin cancer at some point in the last three decades is estimated to be higher than the number for all other cancers combined. Most cases of melanoma, the deadliest kind of skin cancer, are caused by exposure to ultraviolet (UV) light. The sun’s UV rays can damage your skin in as little as 15 minutes. While there are several steps you can take to limit your exposure to the sun, proper sunscreen selection and application is critical.