Wellness peptide craze: why people are injecting drugs 'not for human consumption' Fraley What's the difference between GHK Cu (copper peptide) as a topical cream vs an injection? In this video I break down: What GHK Cu is and why it's used in anti aging skincare Struggling with hair thinning or shedding? Meet GHK Cu, the topical peptide everyone is talking about and NO, it's not an injection! This powerful serum helps: Reduce shedding GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration