MYTH: The more you exfoliate, the better.
REALITY: Though scrubbing regularly to remove dead cells is important, doing it too often can be so irritating that you won't be able to use other anti-aging products, like retinol. The ideal: Exfoliate just once a week with a peel or an at-home micro-derm system like
PMD's Personal Microderm ($179;
personalmicroderm.com).