Slip was founded in 2003 by Fiona Stewart when she discovered the dramatic and immediate results of sleeping on the finest silk. Slip uses its specially commissioned Slipsilk™, which was developed and refined for over ten years leading to its exact, precise standards in shine, thickness, softness, durability, and overall quality. Slipsilk™ has been scientifically tested by independent third-party laboratories, which have found it significantly reduces friction and absorbs less face cream compared to the average cotton pillowcase. Positive anti-aging, anti-sleep crease, and anti-bed-head results are present on hair and delicate facial skin. Slip products are the best kept beauty sleep secret.