Hair Growth Serum Intense with Copper Peptide GHK Cu Ozark Have you heard of GHK Cu the copper peptide your body is already making? GHK Cu (Glycyl L Histidyl L Lysine Copper) is a naturally occurring tripeptide found in human plasma, saliva, and urine. Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care GHK Cu Peptide: Benefits for Tissue Repair, Healing, and Recovery Revolution Health & Wellness