ProXylane® - hydroxypropyl tetrahydropyrantriol

ProXylane® is an ingredient originally developed by Lancome in 2006.  It is now exclusive to L’Oreal.  According to research, it is a sugar-protein hybrid made from xylose, a sugar found abundantly in beech trees and known to stimulate the production of glycoaminoglycans (GAGs), molecules responsible for defending the skin against water loss.