Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum Meet the ingredient your skin has been waiting for. GHK Cu, or Copper Tripeptide 1, is one of the most researched anti ageing actives in skincare. It firms. It renews. It supports collagen. And now Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum GHK Cu Copper Peptide Hair Serum 30ml Azur Skin 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Private Label Organic Professional Treatment Hair Loss Copper Peptide Hair Growth Serum10% Ghk Cu Hair Growth Serum