On the hunt for the most effective zinc oxide sunscreen out there? We asked dermatologists for their favorite zinc oxide options. If you're using a sunscreen that contains only zinc oxide, you'll want to reapply every two hours because the ingredients can clump together on the skin (making them less effective over time), Dr. It's also a great option for babies and kids who have weak skin barriers that aren't as developed-and can even be used safely on children as young as six months-she adds. "Ultraviolet light hits the zinc oxide and reflects away from the skin, preventing it from penetrating."īecause it's not absorbed into the skin like chemical sunscreens, zinc oxide tends to be less irritating, especially for sensitive skin types and those with acne, rosacea, and eczema, says Rachel Nazarian, MD, a New York-based dermatologist and fellow of the American Academy of Dermatology.
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