Can a simple pillowcase swap help your skin? Probably, but it depends on your sleeping position. "Silk pillowcases can be incredibly helpful in preventing wrinkles for anyone who sleeps on their stomach or side," says Dr. Annie Gonzalez, a dermatologist with Riverchase Dermatology in Miami. "When one side of the face is squished against a pillow for eight hours a night, that side is more prone to developing wrinkles than the other." Plus, Gonzalez says, silk isn't as drying as cotton and won't draw moisture out of the skin while you're sleeping.
There's not much research to support these claims, so Gonzalez says not to rely on your pillowcase as your only anti-aging solution. But it won't cause any harm either, reported the German News Agency.
Your pillowcases should be kept clean. Deborah Longwill, also a dermatologist at Miami Center for Dermatology, suggests washing pillowcases once a week and pillows once a month in a detergent meant for sensitive skin. "The fewer chemicals, the better," she says.