Isdin Eryfotona Actinica Ultralight Emulsion

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The Super Shields: DNA Repair Enzymes

Plenty of products (antioxidants, SPF) are designed to protect you from harmful pollution and UV rays, but the latest wave of ingredient technology aims to reverse damage already done to your skin. "As we age, our skin is less able to correct DNA damage from a lifetime of exposure to the sun and free radicals," Engelman explains. "Repair enzymes essentially cut out the damaged DNA like scissors." You'll typically find these enzymes in sunscreen products, and the research results speak volumes: One recent study found that using sunscreen containing the enzyme DNA-photolyase prevented sun damage and treated precancerous lesions in the skin. "The fact that we now have sunscreens that can correct existing damage that could lead to skin cancers is revolutionary," Engelman says.

Find it in: Isdin Eryfotona Actinica Ultralight Emulsion SPF 50+ ($50; Isdin.com)