At this age, acne treatmentsand in particular, overzealous use of themmay be the biggest culprit behind dry skin, says L.A. dermatologist Jessica Wu. To fix, moisturize with an oil-free product on top of any treatment. "You want to hold water against pores without clogging them," she says. Up to three times a week, de-flake with a gentle exfoliator.
YOUR KEY PRODUCTS Olay Pro-X Clear Complexion Renewing lotion, $40/Acne Protocol three-product kit; olay.com.
Neutrogena Naturals Purifying Pore scrub, $8; neutrogena.com.Read MoreLess