GHK Cu (50mg) Your Peptide Brand GHK Cu Research Overview Copper Peptide Studies GHK Cu 50 mg Copper Peptide Research Grade PRG GHK Cu [50mg] Elixser Peptides GHK CU Pepora Precision Peptides GHK Cu is a naturally occurring copper binding peptide that plays a major role in tissue repair and remodeling, with a strong focus in research on skin and hair biology. It works by signaling