Tolerance and Desensitization Springer Nature Link The GLOW protocol combines BPC 157, TB 500, and GHK Cu, three compounds often connected with skin support research. Each one has properties that may relate to renewal, recovery, and maintaining a healthy looking structure in controlled 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 Acquired Glucocorticoid Resistance Due to Homologous Glucocorticoid Receptor Downregulation: A Modern Look at an Age Old Problem Ligand induced desensitization of serotonin 5 HT2C GPCRs