GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect Copper Peptide Hair Growth Shampoo GHK Cu for Hair Loss Hairgenetix Meet GHK Cu, the copper peptide that regenerates and protects. It helps stimulate collagen, improves skin quality, supports hair growth, and fights inflammation for healthier, stronger skin. Contact us at 065 559 Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum