Copper Tripeptide 1 (GHK Cu) Cosmetic Ingredient Guide Glow Peptide (GHK Cu) Mechanism of Action (EN) GHK Cu is a copper peptide that binds to copper ions and delivers them into cells. Copper activates repair genes responsible for collagen, elastin, 6 month GHK CU check in Main takeaway: skin transformation takes time. GHK CU peptide binds to copper and activates genes involved in wound healing, collagen synthesis, and skin remodeling. On the face, this translates Expression and Purification of Recombinant GHK Tripeptides Are Able to Protect against Acute Cardiotoxicity from Exposure to Waterborne Copper in Zebrafish PDF) Regenerative and Protective Actions of the GHK Cu Peptide in the Light of the New Gene Data