Give the best in beauty sleep with a limited-edition holiday set from Slip. The beauty secret of celebrity hairstylists, dermatologists and beauty experts. Slip Pure Silk products are made using slipsilk, developed and refined for over ten years to provide the ultimate combination of shine, thickness, softness and durability. In laboratory testing, slipsilk pillowcases were shown to absorb significantly less face cream than cotton pillowcases,* so they can help keep your skin's moisture and valuable face and hair products where they belong, on your face and hair. Slipsilk was also shown to create 43% less friction on average,* which can reduce stretching and tugging on delicate facial skin, allowing skin to glide along the pillow, which can reduce pressure on creased skin. Slipsilk also helps avoid the hair tangling caused by ordinary cotton pillowcases. Traditional hair ties can tug on delicate hair, which can lead to damage and breakage, but Slip scrunchies are made with slipsilk, the same silk used in the award-winning Slip Pure Silk Pillowcase.