Experience the transformative benefits of a Slip pure silk pillowcase Crafted from 22 momme mulberry silk Slipsilk pillowcases have been scientifically shown to absorb significantly less face cream than cotton helping your skin retain moisture and maximizing the effectiveness of your skincare products The reduced friction of Slipsilk allows your skin to glide smoothly minimizing pressure on delicate facial skin and reducing sleep creases Furthermore Slipsilk reduces friction on hair by an average of 43% compared to cotton minimizing tangles breakage and bedhead Unlike cotton or satin alternatives Slipsilk is a specially developed and refined material offering a superior combination of shine thickness softness and durability Available in queen and king sizes with either a zipper or envelope closure these washable silk pillowcases are the #1 preferred brand recommended by dermatologists for their patients families and themselves