Satin silky pillowcases prevent hair from becoming knotted and matted, have good sleeping, great for preventing wrinkles, dry skin, frizzled hair, and morning bed head. Creates less friction of your beautiful curly hairstyle and reduces hair breakage than sleeping on cotton pillowcases - Will NOT absorb moisture to help retain your shiny hair, perfect for curly hair. The cooling luxury satin pillowcase holds up great in the cold delicate wash.