CAS 75921 69 6 (Melanotan I) BOC Sciences Don't risk your health for a summer glow! Tanning nasal sprays are creeping onto the UK market, particularly on online and lack of regulation means they are a significant risk to your Melanocortin Receptor Agonists Antagonists MedChemExpress Sexual dimorphism in the development and function of the melanocortin system Reviews in Endocrine and Metabolic Disorders Springer Nature Link Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and