2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Manufacturing and Formulation Insights: Divi Scalp Serum Multi Peptide + Copper Peptides 1% Serum Facial Serum w Copper Peptide (GHK Cu), 1 fl oz (topical), Quicksilver Scientific Copper TriPeptide 1, A miracle ingredient that helps restore hair growth from the roots. Try KERAGENE Hair Growth Booster serum with GHK Cu aka Copper TriPeptide 1 in its more effective form to accelerate hair GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair