GHK Cu: The Peptide That Supports Healthy Aging GHK Cu (copper peptide) is naturally occurring in the body and plays a role in supporting skin health, collagen production, and tissue repair. As GHK Cu Copper Peptide Benefits, Uses & Safety Intra V 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 In situ photo crosslinkable hyaluronic acid based hydrogel embedded with GHK peptide nanofibers for bioactive wound healing ScienceDirect