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 The Melanocortin System: A Promising Target for the Development of New Antidepressant Drugs You Should Avoid Using Nasal Tanning Sprays JLE European Journal of Dermatology Eruptive naevi and darkening of pre existing naevi 24 h after a single mono dose injection of melanotan II Afamelanotide tested as a new treatment for vitiligo Vitiligo Clinic