To get rid of the icky callused skin you've been hiding under your socks and boots, submerge your feet in a bowl of grapefruit, orange or lemon juice (you can use one or a combo of the three) diluted with equal parts warm water. "The citrus aid loosens up dead skin better than a regular soak does," say Donna Perillo owner of Sweet Lily Spa in NYC. After 5 minutes, slough your heels and the balls of your feet with a pumice stone, then massage your entire foot with an oil based sugar scrub. Rinse it off, and slather on a body or foot cream.