GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes The Role of G Protein Coupled Receptors (GPCRs) and Calcium Signaling in Schizophrenia. Focus on GPCRs Activated by Neurotransmitters and Chemokines Enhancing neuronal chloride extrusion rescues 2 3 GABAA mediated analgesia in neuropathic pain Nature Communications 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