Melanotan II (Tan Jabs): Why They're Not Worth The Risk 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 MD breaking down Melanotan II Part 2 of my peptide series. The research, the risks, the reality. Long term safety data? Nonexistent. Tanning Nasal Spray Mt2 Nasals Skin Tanners Melanotan 2 Tanning Nasal Spray Melanotan 2 and Skin Tanners Melanotan 2 price