FRIDAY, June 25, 2010 (HealthDay News) -- Sunscreen use has become routine for many Americans, but it's often applied incorrectly, according to a Saint Louis University expert.
"I've seen mothers at the park spraying sun block on babies from too far away to do any good. Others dab on too little to protect themselves adequately from the sun's rays," Dr. Quenby Erickson, an assistant professor of dermatology, said in a university news release.
"If you've gone through the admirable effort of buying and applying sunscreen, make sure it's working while you wear it," she added.
Erickson offered the following advice:
More information
The U.S. Food and Drug Administration has more about sun safety.