Neurogan + Health GHK CU Copper Peptide Hair and Scalp Serum PrettyStick GHK Cu Face Serum 1200MG Lab Tested & High Potency Neurogan Health Neurogan Copper Peptide Hair Scalp Serum for Fuller Softer Shinier Hair Walmart.com 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