This is a Beyond Beauty product which means it has been sourced, tried and tested and finally declared one of the most new and innovative heroes out there. Slip pure silk products are made using slipsilk™. Specially commissioned and made to exacting standards, slipsilk™ has been developed and refined for over ten years to provide the ultimate combination of shine, thickness, softness and durability. In laboratory testing, slipsilk™ was shown to absorb significantly less face cream and create 43% less friction, on average, versus cotton pillowcases. We spend a third of our lives in bed. So what could be better than sleeping on a Slip anti-aging, anti-sleep crease, anti-bed head pure silk pillowcase? Wearing a luxurious slipsilk™ sleep mask at the same time, so your beauty sleep isn't interrupted.