You Should Avoid Using Nasal Tanning Sprays Melanotan II A Sun Kissed Look, and a Confident You. Melanotan II (Tan Jabs): Why They're Not Worth The Risk Thinking of trying Melanotan? Heres what I wish I knew before I started Start slow. Even if youre experienced with peptides, Melanotan hits differently. Nausea is real and dose dependent. I had 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