Nasal sprays containing the 'Barbie Drug' melanotan are very, very dangerous and completely unregulated, according to leading dermatologist. Experts say there has been a surge in the use of the illegal tanning aid The Tanning Drug What Patients Should Know 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 Tanning Nasal Spray: Should You Skip It? Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider