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The Problem: Dryness
The Cause: You may be using antiaging or acne products containing retinol or benzoyl peroxide, or you're exposed to dry heat, or you're not drinking enough fluids. Or: You may simply have chronically parched skin.
The Remedy: The katafray bark in Clarins HydraQuench Cream-Mask ($35, department stores) encourages the production of a protein essential to forming new cells—and when cells are new, they retain more moisture.