Melanotan II (Tan Jabs): Why They're Not Worth The Risk Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider Melanotan II (acetate) Cayman Chemical Biomol.com 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 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 Reminder of serious health risks with 'Melanotan 2' self tan products Irish Pharmacist