Introducing the L-Lift—A Novel Approach to Treat Age-Related Facial Skin Ptosis Using A Collagen Stimulator Hexsel, Doris MD; Hexsel, Camile L. MD; Cotofana, Sebastian MD, PhD Dermatologic Surgery: July 09, 2019 - Volume Publish Ahead of Print - Issue - p doi: 10.1097/DSS.0000000000002015