The Dark Side of Melanotan Tanning Injections: My Personal Experience Revealed Melanotan II Simple Peptide 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 Martina Big, a 36 year old German model, has undergone extensive tanning procedures and surgeries to alter her appearance, including the use of Melanotan injections to darken her skin. She and her 38 year old husband,