Researchers looked at skin cells that were exposed to UVB and UVA rays and found that progerin, a protein associated with aging, was activated by UVA rays. While the protein has long been associated with aging, this is the first study linking it to UVA rays. So what’s the deal with this protein? More research needs to be done, but “it may stop the fibroblasts [cells that produce skin-firming collagen] from functioning, resulting in skin thinning, loss of elasticity, and wrinkles,” says study author Thomas M. Ruenger, MD, PhD, professor of dermatology at Boston University. Remember: These rays are present all year round and they can penetrate glass. Make sure to use a sunscreen labeled “broad spectrum” daily, says Dr. Ruenger. Check out Learn The Sunscreen Label Lingo to learn how to protect your skin. Ready to commit to healthy skin? Follow @PreventionBeaut on Twitter to participate in our #SPFstreak!
