Molecular crystal structure of the tripeptide GHK Cu. In solution, Download Scientific Diagram Reactive oxygen generation by minimal copper binding peptide motifs bioRxiv Everyone's calling GHK Cu a miracle peptide But let's separate marketing from mechanism. GHK Cu isn't magic. It's a signal. A signal that: Supports tissue repair Modulates inflammation Enhances collagen + The Bright and Dark Sides of Reactive Oxygen Species Generated by CopperPeptide Complexes