 Kids have thinner, more absorbent skin, which is why Dr. Engelman (and many of her peers) recommends a physical formula (which sits on top of skin to deflect UV rays) over a chemical one (which is absorbed into the skin) to be extra safe. |  Zinc oxide and titanium dioxide are the only two mineral sunscreens on the market, and they're also the only sunscreen actives considered safe and effective by the FDA. |
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