By Erica Metzger
Exfoliation can backfire in winter if you're too aggressive. "Strong chemical peels are usually too irritating. I've also had patients come in with rashes after using the popular handheld electric skinbrushes," says Shirley Chi, MD, a dermatologist in Arcadia, California. So keep it simple. Dr. Chi recommends using a washcloth daily or a mild scrub once a week.