CellularStack Medically Supervised Peptide Research & Education GHK Cu Copper Peptide Regeneration, Skin Renewal & Anti Age Your skin has the ability to heal itself GHK Cu helps it remember how. As we age, our levels of GHK Cu (a naturally occurring copper peptide) decline by up to 60%. GHK Cu (10 mg, 50 mg, 100 mg) COA verified peptide Nootropix KPV GHK Cu (10 50 MG) Sigma Compounds GHK CU + Epithalon Mix 25 mg + 10 mg PRO