BeautySpaceNK Slip Pure Silk Reduce Friction Knot Fashion Headband Pink Make a statement with slip. When fashion meets comfort. From the makers of the slip anti aging anti sleep crease anti bed head pure silk pillowcase. MAKE A STATEMENT WITH Slip: We developed the slip anti aging anti sleep crease anti bed head pure silk pillowcase because slipsilk can help to reduce friction which can reduce stretching and tugging on delicate facial skin. So what could be better than sleeping on a slip pure silk pillowcase? Slipsilk all day long with a luxurious slip pure silk headband.