GHKCu 50mg High Purity, U.S. Made Research Peptides OROS Research Best Peptide For Hair Growth The Ultimate Guide Does it work? Maneup GHK Cu hair growth serum : r tressless Viral claim says GHK Cu reset nearly 4,000 genes to a younger state and increased collagen production in a preclinical study. This refers to research on GHK Cu, a naturally occurring copper binding peptide that GHK Cu Isn't Just for Skin: The Anti Aging Peptide That Works From the Inside Out