Knoxville (WVLT) - A study casting new light on sunscreen, a comprehensive review of sun protection strategies concludes we should stop trusting sunscreen as the front line of defense against harmful rays.
And instead, wear sun blocking clothing or stay out of the sun, altogether.
Studies have shown sunscreen protects against two of the three most common skin cancers -- basal carcinomas and squamous cell carcinoma.
But it hasn't been conclusively shown to protect against melanoma, the most fatal kind of skin cancer.
"The other thing that we don't talk about so much is UVA rays. So, SPF protects against UVB rays or measures UVB protection, but not our UVA protection."
Dermatologist Doctor Matthew Doppelt says that's not to downplay the importance of applying sunscreen daily.
Choose a broad spectrum sunscreen that protects against UVA and UVB rays, and has a sun protection factor of at least 15.
Though, wearing sun-protective clothing and a hat and keeping sun exposure to a minimum is preferred.
"Clothing does actually do a pretty good job of protecting the sun, as long as it's a pretty tight weave of cotton-type clothing,” suggests Dr. Doppelt.
Dry clothes are better at blocking UV rays than wet, stretched or bleached clothing.
If you must be outside during the sun's strongest hours, between 10:00 a.m. and 4:00 p.m., seek shade.
"As far as we know, we're telling our patients to do the best thing by protecting themselves from the sun and use a sunscreen, however, sun avoidance would actually be a better alternative,” Dr. Doppelt says.
If there's no shade, pack your own, bring an umbrella or a hat and always use sunglasses.
In addition to protecting yourself against skin damage, you're also helping to minimize the signs of aging, including fine lines and wrinkles.
Free radical damage occurs as we age, but it's aggravated by environmental factors, including cigarette smoke, air pollution, UV radiation and ozone.
Most skin care physicians agree antioxidants are key in creating an anti-aging skin care regimen, because they're our body's natural defense against these free radicals.