Cotton grabs your hair and twists it at the root throughout the night, damaging hair and causing bed-head in the morning, whereas slipsilk is so gentle on your hair, it allows your hairstyle or blow-dry to last overnight. Unlike cotton, which draws moisture from your face, hair and scalp, slipsilk breathes and is a natural temperature regulator.Slipsilk is specially-commissioned and made to Slip's exacting standards, developed and refined over ten years to provide the ultimate combinatio slip Pure Silk Pillowcase, Queen-Home