slip Classic Large Scrunchie 3 Pack in Beauty: NA. Traditional hair ties can tug on delicate hair which can lead to damage and breakage. slip Classic Large Scrunchies are made with slipsilk, the same silk used in their award winning pure silk pillowcases. Its wide surface area and high-grade silk is designed to reduce those annoying ridges caused by regular hair elastics.. 100% silk (exclusive of elastic). Anti-crease & anti-breakage. Gentle on hair. Set of 3. SLIP-WU14. 853218006704. 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.