Melanotan II A Sun Kissed Look, and a Confident You. 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 II (Tan Jabs): Why They're Not Worth The Risk Melanotan 2: 10 mg for Research UK SARMs Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider You Should Avoid Using Nasal Tanning Sprays