GHK CU Beverly Hills Rejuvenation Center GHK Cu Peptide Regenerative & Cosmetic Research GHK Copper Peptide Concentrate, cumpr ingredient cosmetic Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care 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.