GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair 12 Week Supply (30 mL) Has anyone tried peptides GHK Cu (copper) in particular? : r FemaleHairLoss Neurogan Health Introduces AHK CU + GHK CU Hair Serum Pro The Skin & Hair Stack GHK Cu Copper Peptide Bundle Neurogan 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