Galveston County Daily News, May 5, 2007 GALVESTON -- If there are a few bad sunburns in your past, it wouldn't hurt to make sure there isn't a danger of skin cancer in your future. Today, hospitals across the nation will participate in free skin cancer screenings to help spot early signs of significant sun damage. It's part of skin cancer prevention month. But to really prevent skin cancer, people need to start protecting themselves now, Dr. Sharon Raimer, the chief dermatologist at University of Texas Medical Branch at Galveston, said. And research indicates that might have just gotten a little easier. While there's no magic shield to protect the fair-skinned from sun damage that leads to skin cancer, there is an almost-magical ingredient now available in sunscreen that could help. Most sunscreens, including some that claim to, don't fully protect skin from the sun's most dangerous rays, Raimer said.