Does sunscreen work?
When applied properly, it offers the best protection possible aside from no exposure at all. Sadly, sunscreen is seldom applied the way it was intended. The lighter skin you have, the more often you should reapply lotion. If you are outdoors or in the water, you should use a water-proof lotion or re-apply lotion every two hours. Even water-resistant suncreen loses its efectivness after 80 minutes. You should apply lotion liberally. A good rule of thumb is 1 teaspoon for your face and a tablespoon for each arm and leg.
