The silk pillowcase supports the health of your skin and hair overnight. Silk is a soft and fine fabric. Unlike other pillowcases, such as cotton pillowcases, silk is so smooth that your hair and skin glide over it and there is hardly any friction. This friction usually causes split ends, frizzy or static hair. Silk also ensures that your skin and hair retain their natural oils and moisture while you sleep and even moisturise more. This also prevents dryness and wrinkles.