What's the Best Line of Defense Against Sun Damage?
Covering up at the beach is just as effective and, in some cases, even better than sunscreen at protecting the skin from damaging ultraviolet rays.
A new spanish study looked at the effects of UV-B radiation on existing moles.
Researchers found both sunscreen and physical barriers like shirts and hats can partially prevent UV-B effects, but the coverups worked a little better.
Researchers say the best practice may be to combine both lines of defense.