 That's why sunscreen and other safety measures are key to protecting your skin from aging and cancer. The FDA recommends using a sunscreen with an SPF of 15 or higher. Also, look for broad spectrum on the label. That means both harmful ultraviolet A and B rays are blocked. Remember, SPF plus broad spectrum equal healthy fun in the sun. Visit www.fda.gov slash sunscreen for more information. A message from the U.S. Food and Drug Administration.