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 Nasal tanning sprays and oral tanning drops are often marketed as quick fixes for glowing skin but these products are unregulated in the UK, with unknown ingredients, dosing, and formulation., They Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider Nasal tanning sprays linked to skin cancer, trading standards officers warn Consumer affairs The Guardian Viral tanning 'Barbie drug' linked to cancer, experts warn Melanotan Nasal Tanners Before and After Turbo Tan Star