Doctors warn against viral nasal spray tanning trend 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 Self Tanner Dark Skin Sun Tanning Spray Tanning Nasal Spray Melanotan II and Mt 2 Tanning Spray Nasal price What is Melanotan II the drug that the TGA urges consumers to avoid? 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