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You exfoliate every day.
A gentle face scrub or chemical exfoliant can brighten your complexion and slough off surface cells, allowing the active ingredients in your products to penetrate better, says Callender. But exfoliating more than once or twice a week or using abrasive scrubs can create microtears, resulting in parched, irritated skin, says Graber.

Murad Rapid Resurfacing Peel, $44 for 16-pack; Murad.com