Physical blocks, which contain naturally occurring minerals, such as titanium dioxide and/or zinc oxide, are gentler than chemical versions because they're free of harsh fragrances, dyes, and preservatives, says Amy Wechsler, MD, a dermatologist in New York City. If you have rosacea, try an ultramild shield, such as Aveeno Baby Natural Protection MineralBlock SPF 30 ($11, drugstores). If you're breakout prone, use a noncomedogenic protector, such as SkinCeuticals Physical Fusion UV Defense SPF 50 ($30, skinceuticals.com). No matter what type of skin you have, "it's just as important to take off SPF at night with a cleanser as it is to put it on in the morning," says Mona Gohara, MD, a dermatologist and an assistant clinical professor of dermatology at Yale School of Medicine. "Sunscreens left on overnight can aggravate acne and redness."
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