Rho Nutrition Liposomal Glutathione Ultra High Absorption Liquid Glutathione Supplement Supports Natural Detoxification, Immune System, Skin Health, Mental Clarity & Overall Well Being Walmart.com What Is Glutathione? Health Benefits, Risks, and More GHK Cu Research Overview GHK Cu is a copper binding tripeptide complex currently being studied for its role in cellular signaling and tissue related pathways. Research has explored its involvement in processes associated with skin 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. GHK Cu G Lab Peptides