Health Information
New Advances in Sunscreen: Better UVA Protection
A new FDA-approved line of sunscreens now protects against intense and harmful ultraviolet A, or UVA, radiation, which scientists have linked to wrinkles, basal and squamous cell cancers and melanoma. An ingredient called encamsule screens out the harmful UVA rays. Previously, available broad-spectrum sunscreens protected against UVB radiation as measured by the SPF number, but were less effective against UVA rays.
"UVA light penetrates deeper into the skin and is more damaging than UVB light," says Allison Vidimos, R.Ph., M.D., chair of Cleveland Clinic's Department of Dermatology. "The improved protection this product offers causes less biochemical change in your skin."
New Skin Protecting Technologies
Both UVA and UVB coverage are vital in protecting the skin against sunburn, skin cancer and premature aging, Cleveland Clinic dermatologists say. This is the first time encamsule has been marketed in the United States, but it has been available in Europe and Canada since the 1990s.
Another new sunscreen is Helioplex. This broad-spectrum sunscreen effectively screens both UVA and UVB rays and is stable in sunlight.
"Right now, melanoma — the most serious form of skin cancer — is the number one type of cancer in women ages 25 to 29 years old," shares Dr. Vidimos. "Proper use of sunscreen starting in early childhood may help change that statistic."
Since no sunscreen is 100 percent effective, Dr. Vidimos advises limiting time in the sun and wearing other protective clothing to help decrease the incidence of skin cancer, as well as damaged skin.
How Much Is Enough?
Most importantly, Dr. Vidimos stresses using enough sunscreen to obtain the necessary protection. Sun-seekers must use the correct amount for proper skin protection and the best results.
"Most people make a bottle of sunscreen last all summer," she says. "If that's the case, they are simply not applying an adequate amount each time they go into the sun." You should use a full shot glass of sunscreen - equaling one ounce - to cover your exposed skin every couple of hours, including a full teaspoon for your face and neck.
"The majority of the population uses only about half the required amount," Dr. Vidimos explains. Apply the sunscreen 30 minutes before going out into the sun, and then reapply every two hours. That means a six-ounce bottle may only last a couple of days, indicating another purchase in the near future.
"A good sunscreen may cost a few dollars more," she says, "but the expense is worth it. It's definitely an investment in your health and well-being for the future."
According to Cleveland Clinic dermatologists, fair-skinned folks should use an SPF of at least 30, and ideally apply it every day. The rule of thumb is the lighter the skin type, the higher the SPF number.
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