Get Hard On Nails
A protein-packed strengthener prevents nails from splitting and cracking—and can make a manicure last days longer. "Every time you go for a swim or wash your hands, you strip fortifying oils from your nails," says L.A. nail expert Skyy Hadley. Look for a polish that contains biotin (which stimulates growth) and choose one of the season's hot pastels, like Sally Hansen's Nailgrowth Miracle Color in Pretty Petunia ($6;
drugstore.com).