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 Peptide GHK CU Cream Concierge MD Topical GHK Cu: Skin Benefits, Best Forms, and Where to Buy Copper Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime Amazon.com : Stretch Mark Serum Prevent and Reduce Appearance of Stretch Marks 1 oz : Beauty & Personal Care