slip Skinny Scrunchies Set Of 4 in Navy. slip Skinny Scrunchies Set Of 4 in Navy. Traditional hair ties can tug on delicate hair which can lead to damage and breakage. Slip scrunchies are made with slipsilk, the same silk used in the award-winning slip pure silk pillowcase.. The multi award-winning skinny slip scrunchie is the perfect size for everyday use.. Won't leave creases in your delicate hair.. Set of 4. SLIP-WU118. 810046985748. In 2003, slip Co-Founder and CEO Fiona Stewart was prescribed acne medication which resulted in extremely sensitive skin and thinning hair. Her dermatologist suggested sleeping on a silk pillowcase. Unable to find one, she sourced the best silk she could find and wrapped it around her pillow. The results were dramatic and immediate, she's never looked back. She had stumbled upon a long-forgotten beauty secret - and slip was born.