It's estimated that about 1 out of 7 people in the U.S.A will get some form of skin cancer while they're ailve. A serious sunburn can increase your risk of skin cancer by 50%! The effect that UV rays on your skin is dependent both on the intensity and the duration of your burn. How your skin can react to the amount of exposure received is actually related to your genetic background. Even if you rarely burn, sensitive parts of your body such as your lips, nose and palms of your hands should be protected by sunscreen.