GHK Copper Peptide GHK Cu Tripeptide 1 2 weeks in on GHK Cu and the glow is REAL. Brighter complexion More even skin tone Less breakouts Softer fine lines Thicker, fuller hair This is just Ghk Cu Peptide Serum for Face, Copper Peptides Anti Aging Serum Firming, Wrink eBay GHK Cu, commonly known as copper peptides, are found naturally within the human body where they play a vital role in skin repair and maintenance. Copper peptides support optimal skin function by helping