GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio Figure 3 from GHK Copper Peptide in Skin Remodeling and Anti Aging ! GHK Cu in Skin Remodeling Semantic Scholar GHK Cu: The Regenerative Peptide for Skin, Hair, and Healing Pulse & Remedy