Reactive oxygen generation by minimal copper binding peptide motifs bioRxiv The Bright and Dark Sides of Reactive Oxygen Species Generated by CopperPeptide Complexes The Bright and Dark Sides of Reactive Oxygen Species Generated by CopperPeptide Complexes 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 + GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes