2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Seraphime Natural Copper Peptide Serum Booster 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 & Scalp Serum YanaSecrets GHK CU Copper Peptide, Face Serum, 1 oz (30 ml)