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 longer lasting than Melanotan II an overview ScienceDirect Topics You Should Avoid Using Nasal Tanning Sprays What are 'melanotan' injections? Explaining the controversial tanning drug Dazed You Should Avoid Using Nasal Tanning Sprays Rise in social media influencers promoting dangerous nasal tanning sprays