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 50mg 100mg Copper Peptide (RUO) Tide Labs Tide Labs GHK CU taflabs.com GHK Cu Copper Peptide Regeneration, Skin Renewal & Anti Age Neurogan Health Copper Peptide GHK CU , 120 mcg, 60 Tablets, 0.52 oz (15 g)