Buy GHK Cu copper peptide properties, effects and characteristics Buy GHK Cu Copper Peptides (100MG) Shop 99% Pure Peptides Introduction GHK Cu is a copper peptide complex formed from the tripeptide glycyl L histidyl L lysine bound to copper. This compound has garnered significant attention in both laboratory and formulation research due to its critical role 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 50mg vs 100mg: Which Concentration Should You Buy?