Woman with tanning 'obsession' claims people accuse her of trying to 'switch races' FOX 35 Orlando 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 Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically How Long Does It Take For Melanotan To Work? The Risks Behind Tan Booster Injections & Nasal Sprays Nasal tanners left me suffocating in hospital' BBC News