Copper Peptide (GHK Cu): Clinical Uses, Stability & Compounding Tips The first order degradation profiles of GHK Cu in various medium stored Download Scientific Diagram Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum Neurogan Copper Peptide Hair Scalp Serum for Fuller Softer Shinier Hair Walmart.com GHK Cu for Skin & Wound Healing: Current Evidence Meeting Point Health GHK Cu is a naturally occurring tripeptide in human plasma. Levels average 200 ng ml at age 20 and drop to 80 ng ml by age 60 (Pickart et al., 2020). That decline tracks with