GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true?, Copper peptide, known as GHK Cu, has a growing body of peer GHK Cu Copper Peptides: Topical vs Injectable GHK Cu Copper Peptide Collagen Boost & Skin Regeneration Calibrate Hydration GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK