2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care GHK Cu Copper (1%) Tripeptide Serum with Hyaluronic Acid (1.5%) Face and Scalp Serum FOUNTAIN 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care 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 Full Size (30 mL) Divi Growth Care System Inside Out Care for Thinning Hair