Copper Peptide Serum (GHK Cu) Nardo's Natural Private Label GHK Cu Peptides Serum TryDeloura As we age, our skins performance decreases., Give the gift of healthy looking skin. , Copper Amino Isolate Serum 3 1:1 is a foundational copper peptide (1% GHK and 1% GHK Cu) serum to restore the GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) Topical GHK Cu: Skin Benefits, Best Forms, and Where to Buy