In the spirit of having some serious fun in the sun—safely!—we’ve gathered our best tips on protecting your skin:  There’s one thing skin experts agree on: We don’t use as much sunscreen as we should. In fact, the protection most of us get from SPF 15 is more like SPF 3 to 7. See what SPF level you should be using, and sort out the rest of your sunscreen confusion.   Have you checked your man lately? Here’s a reason to give your cutie a thorough once-over: According to the American Academy of Dermatology, Caucasian men over 50 are the population most at-risk for deadly melanoma. See how to get up close and personal with his beauty marks—strictly for the sake of science, of course.   4 sun safety sins you’re committing You’re never too old—or too young—to be making big mistakes when it comes to protecting your skin. Case in point: Melanoma rates are up across the board, according to a new study by the Mayo Clinic. Check out four skin care myths that could be putting you at risk.