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 Peptides are the hottest word in wellness right now, so naturally I had to dive in!, The peptide stack I am trialing is GHK CU (hair, skin & nails) and Glutathione (neutralizes free radicals, reduces GHK Cu Peptide Benefits (And a Few Risks) Explained GHK Cu (50 MG) Sigma Compounds