Peptide Injections: What They Are, What They Promise, and the Big Unknowns 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 Grass Fed Beef Tallow & Copper GHKCU Peptide Soap Bar with Coconut Oil Shea Butter for GHK Copper Peptide Spray LowTE Florida