Journal of Neuroscience Research JNR Neuroscience Journal Wiley Online Library 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 Conformational restriction blocks glutamate receptor desensitization Nature Structural & Molecular Biology The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline Ligand induced desensitization of serotonin 5 HT2C GPCRs Robust GRK2 3 6 dependent desensitization of oxytocin receptor in neurons ScienceDirect