GHK Cu Copper Peptide Neck & Face Serum GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) The research on GHK Cu goes back over 40 years a scientist dedicated his entire career to it. Your body already makes it. You just make about 60% less of it by 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