GHK Cu Peptide: Reconstitution, Use, and Unexpected Benefits GHK Copper Peptide for Skin Regeneration 1 As we age, the signals that tell our skin to repair and regenerate gradually decline. This can lead to thinner skin, slower healing, reduced elasticity, What Are GHK Cu Peptides for Skin and Hair Health? Can You Use GHK Cu Peptides with Vitamin C Serum? Expert Guide GHK CU Copper Peptide, Face Cream, 2 oz (60 ml)