Melanotan II Safety: Tanning Injection LIVV Natural Insights into Tanning Biology and Tanning Products JCAD The Journal of Clinical and Aesthetic Dermatology You Should Avoid Using Nasal Tanning Sprays 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 It doesn't take much to fall down the Barbie Drug rabbit hole. In self tanner subreddits and on TikTok Shop, the tanning injectionaka Melanotan IIis marketed as a self tanner alternative that works by White model Martina Big, who now a ''black' after taking tanning injections, announces plans to move to Africa.