GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia Molecular crystal structure of the tripeptide GHK Cu. In solution, Download Scientific Diagram 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 Compounded GHK Cu Cream: The Copper Peptide Breakthrough for Skin Repair & Anti Aging Restorative Compounding Pharmacy + Wellness GHK Cu Peptide Benefits (And a Few Risks) Explained