Why you should never sleep on a cotton pillowcase

By Sean Dowling, Buzz60

Never sleep on a cotton pillowcase. It can add years to your appearance by causing wrinkles. Silk pillowcases are the best choice for beauty rest.

According to skincare experts, they cut down on friction against the face. They're also said to reduce irritation, hair frizz and wrinkles.

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Cotton pillowcases are said to catch your skin because they don't allow skin to slide. On the other hand, silk pillowcases are said to let your skin breathe, while not pulling at the skin. Lying face down could also cause aging.

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Even Kourtney Kardashian is a fan of silk. She says on her app it won't dry out skin like cotton pillowcases because it doesn't absorb natural oils from your skin.

It isn't clear if she was paid for the post.

With that said, silk pillowcases will set you back up to $100 -- but can you really put a price on preventing wrinkles?

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