![]() “While it’s thought that UVB rays are responsible for sunburns and UVA rays are responsible for skin aging, both types of rays can contribute to skin cancer.” “This indicates coverage against both UVA and UVB rays,” she says. In addition to high enough SPF protection, Garshick says that broad-spectrum protection is also just as important. According to a recent report by EWG, sunscreens offering SPF protection above 50 may not necessarily provide stronger protection against UV rays, so there’s no need to look for anything higher than that. However, there’s also no need to shop for products with a super high SPF amount, either. “When applied and reapplied correctly, SPF 30 blocks 97 percent of UVB rays, while SPF 15 is thought to block just 93 percent,” she says. When it comes to the amount of SPF protection in a sunscreen, Garshick stresses the importance of using a formula that contains SPF 30 or higher. What to Look For At Least SPF 30 Protection Marisa Garshick, MD, FAAD, is a board-certified dermatologist at MDCS: Medical Dermatology and Cosmetic Surgery Centers and is the Clinical Assistant Professor of Dermatology at Cornell University. Keep reading for the best mineral sunscreens to wear daily. We also took recommendations of board-certified dermatologist, Marisa Garshick, MD into consideration to bring to you a well-rounded list. We evaluated them based on each formula's texture and feel and how well it protects the skin from sun damage. We went to work researching and trying a handful of top-rated mineral based sunscreens spanning a range of budgets, skin types, and concerns. Mineral formulas also have the benefit of being much less irritating, especially if your skin skews toward sensitivity. On the other hand, the two most commonly used mineral ingredients, titanium dioxide and zinc oxide, are both sunscreen ingredients the FDA has deemed to be generally safe and effective. Chemical blockers have come under some scrutiny as of late, due to recent findings concerning the efficacy of chemical ingredients and how much of them penetrate the bloodstream. Mineral sunscreens are physical blockers, which deflect the rays away from the skin opposed to chemical options, which absorb UV rays. If your daily activities include swimming or getting a sweaty workout in, water-resistant formulas will be essential to slather on-reapplying every hour or so to ensure continuous coverage. ![]() Make sure your mineral sunscreen pick has a broad-spectrum formula that protects against both UVA and UVB rays and has at least an SPF of 30. It’s imperative that you find a sunscreen you like and are going to use. ![]() ![]() (We also use a reference sunscreen with known performance to ensure the accuracy of the testing.) About a day later, a trained technician examines the areas for redness.When it comes to sunscreen, the absolute most important thing is that you’re using one. Afterward, smaller sections of that area are exposed to five to six intensities of UV light from a sun simulator for a set time based on how quickly the panelist’s skin burns without protection. Then they soak in a tub of water for 40 or 80 minutes, depending on the product’s water-resistance claim. To check SPF, a standard amount of each sunscreen is applied to a 2x3-inch rectangle on each panelist’s back. We also do a different test to determine UVA protection, which we think gives more helpful results. “We use three samples, preferably with different lot numbers, of each product.” For SPF-a measure of how well a product protects against UVB rays-we test the sunscreens on fewer people than the FDA’s protocol calls for, and we test only after water immersion because if a product holds up on wet skin, it should hold up on dry skin. “We buy the sunscreens for our tests off the shelf, the way consumers would,” says Susan Booth, who oversees our sunscreen testing.
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