Everyone talks about the glow from GHK Cu Nobody talks about the burn. Yes, GHK Cu gets hyped for tighter looking skin, scar support, collagen support, and regeneration. And the reason people talk about it Frontiers Opioid receptor desensitization: mechanisms and its link to tolerance IFN and CTLA 4 Drive Hepatic CD4 T Cell Tolerance and Protection From Autoimmunity in Mice Cellular and Molecular Gastroenterology and Hepatology The Role of G Protein Coupled Receptors (GPCRs) and Calcium Signaling in Schizophrenia. Focus on GPCRs Activated by Neurotransmitters and Chemokines GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes