GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care 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 GHK Cu Copper Tripeptide 1 Research Reagent Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb Buy GHK CU Peptides Topicals, Tablets, Hair & Nasal Sprays Safe, Tested Copper Peptide Supplements Neurogan Health