Summer Skin Dictionary

These days, tanning involves a lot more than a good magazine and some oil. We're breaking down the scientific meanings to get you and your skin ready for summer.

By Leah Melby

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Courtesy of L'Oréal Paris
Amino Acids

DHA (the active ingredient in most self-tanners) reacts with these proteins in your skin to produce pigment and give you a bottled, sun-kissed glow.

L'Oréal Paris Sublime Bronze Clear Self-Tanning Gel, $10.49; amazon.com

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