About Silk Sleep Mask Slip pure silk sleep masks are 100% pure silk, inside and out. They're made with pure silk filler, silk internal liner, and a silk-covered elastic band. ✈️ ANTI AGING We spend a third of our lives in bed. Silk ­fibers are signi­ficantly less absorbent than many other ­fibers, so they can help keep your skin’s moisture and expensive face and hair products where they belong, on your face and hair. Slipsilk™ can help to reduce friction, which can reduce stretching and tugging on delicate facial skin. ✈️