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 A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb GHK Cu (50mg) Accelpeptides Buy GHK Cu Capsules France 2mg from Direct Peptides