Facial Serum w Copper Peptide (GHK Cu), 1 fl oz (topical), Quicksilver Scientific GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum 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