![]() When sunscreen was first regulated by the Food and Drug Administration in the 1970s, “our understanding of damage from the sun was really limited to UVB,” Dobos says. UVA rays penetrate the skin more deeply and are a greater contributor to skin cancer, says Kelly Dobos, a cosmetic chemist and professor of cosmetic science at the University of Cincinnati and the University of Toledo. ![]() Two types of UV rays cause sunburns: UVA and UVB. The sun emits ultraviolet - or UV - rays that can damage the skin. To help guide you toward the sunscreen of your dreams, experts provide clarity on common questions about the product. Some sunscreens leave a ghostly cast others can exceed $50 for just a few ounces of product. In the European Union, for instance, sunscreen is regulated as a cosmetic product so new ingredients have been introduced into their formulas, compared to the US where new ingredients haven’t been approved in over two decades. Not all sunscreens available in the US (and elsewhere) are built alike. Taken together with other smart sun practices, like wearing sunglasses and a hat that covers the face and ears and seeking shade, regular sunscreen use can lower your risk of skin cancers, both among lighter-skinned people (who are more susceptible to skin cancer) and people of color, who are more likely to die from skin cancer due to a delay in detection. Sunscreen - which works by blocking ultraviolet radiation from the sun - has been shown to prevent skin cancer, wrinkles, pigmentation, and sunburn. Even so, many American adults aren’t great about wearing sunscreen: Only 12 percent of men and 29 percent of women reported always using sunscreen when outside on a sunny day for an hour or more, according to a 2020 National Health Interview Survey. Any dermatologist will say so they’re likely to recommend everyone include it in their daily skin-care regimen. ![]() Sunscreen, one of the tools in the sun-protective tool belt, is non-negotiable, regardless of the weather or your skin type. Anyone who’s suffered the torment of a sunburn can tell you how they wished they’d done a better job protecting their skin.
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