Topical GHK Cu: Skin Benefits, Best Forms, and Where to Buy This peptide reverses aging, And its been hiding in plain sight for decades., GHK Cu (Copper Peptide) is one of the most researched anti aging ingredients out there., Heres what it does:, GHK Cu Peptide: Benefits for Tissue Repair, Healing, and Recovery Revolution Health & Wellness GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes GHK Cu Hair Growth