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 The Angiotensin Metabolite His Leu Is a Strong Copper Chelator Forming Highly Redox Active Species Inorganic Chemistry Deciphering the Wound Healing Potential of Collagen Peptides and the Molecular Mechanisms: A Review Journal of Agricultural and Food Chemistry Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry