An overnight solution to skin-care problems like acne or wrinkles often seems like a dream. But some beauty companies offer ways to improve your skin while you sleep Classic Vintage Flint Autoworld Pillow Cover , not with creams or serums, but with the right pillowcases. Since 2004, Slip has sold silkSkin Laundry offers a pillowcase with silver ion technology to kill acne-causing bacteria, and theDéjà pillowcase has eight fold-over layers you peel every night for a fresh surface free of oils and residue each time you sleep. These sound promising, but do they really work? To find out, we asked five dermatologists and one aesthetician if there’s any truth behind these claims.

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