Finding the Right Sunscreen

September 23, 2007

LOS ANGELES - Choosing the right sunscreen can be a daunting task given the numerous products available in drug stores today. So how do you choose one that’s right for you and your family?

“It’s important to check the active ingredients on the back of the bottle,” recommends David Peng, M.D., director of the melanoma dermatology clinic at USC/Norris Comprehensive Cancer Center. “SPF only protects the skin from UVB rays. You want to pick a broad spectrum sunscreen that blocks both UVB and UVA.”

Sun exposure has long been linked with developing skin cancer and melanoma later in life. People who burn easily in the sun, have blue/green eyes, have blonde or red hair or have many freckles tend to have a higher risk for the disease. In fact, melanoma is the one type of skin cancer that is more common among people younger than 30 years of age. In addition, those who have a prior history of melanoma or a family history are particularly vulnerable.

There are two types of blockers in sunscreen - chemical blockers and physical blockers. Chemical blockers absorb the light, however, many people are sensitive or allergic to the product. Physical blockers reflect the light.

“Look for titanium dioxide and zinc oxide as they are the strongest blockers for UVA and UVB rays,” continues Peng. “Just because you’re allergic to one type of sunscreen doesn’t mean you are allergic to them all.”

In June, the U. S. Food and Drug Administration (FDA) approved the newest sunscreen formula available in the United States called Mexoryl. Peng says that it’s a very effective broad spectrum chemical blocker that is well tolerated by a majority of people. However, it’s expensive.

“I typically recommend my patients reapply sunscreen every two hours if you’re out in the sun for prolonged periods of time. If you’re in the sun more than twice a week, try to wear a wide brim hat and long sleeves,” continues Peng. “Try to build sunscreen into your daily routine. Makeup and lotions now come with SPF protection. Men especially should pay more attention to sun safety. They account for more than half of melanoma deaths each year.”