Slather on sunscreen
Every day! Even if you're going to be inside, you can still get UV exposure through windows. In fact, car windows let in more than 60 percent of UV rays from sunlight.

Bleach 'em out
Got dark brown blotches? Those are caused by UV damage. Try an OTC bleaching cream. If that doesn't work, your derm can prescribe a stronger version-or give you laser treatments at $250 a pop.

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