BEAUTY TIPS: EXFOLIATE REGULARLY

"A baby's skin replenishes itself completely every 14 days," explains Howard Sobel, a clinical attending physician in dermatology at Lenox Hill Hospital in New York City. "But by age 30, an adult takes a full 28 days to replenish." With all that extra time, skin cells have a chance to dry out and lose luster—unless you jump-start the renewal process by exfoliating. Dermatologist recommend use of a gentle face scrub once or twice a week, and a chemical exfoliant which dissolves the glue that holds dead skin cells in place—on two other days of the week. After using a pad for your face, don't let it go to waste: "Massage it on your arms," says Waldorf. To make exfoliating less of a chore and more of a treat, consider parking a motorized Clarisonic Classic Sonic Skin Cleansing System or Olay Professional Pro-X Advanced Cleansing System in the shower.