GHK Cu (copper peptide) is actually something your body already makes when youre younger which is great, until it slowly starts disappearing., It basically tells your body to repair itself better. Buy GHK Cu Peptide for Research Australia Peptide Sciences GHK Cu Copper Peptide Serum with Niacinamide, Hyaluronic Acid and Mushroom Extract 1% Copper Tripeptide 1 Anti Aging Formula, 1 oz GHK CU Australian Peptide Clinic