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 II Peptide: Tanning, Immunity, and Metabolic Support Revolution Health & Wellness October 2017 VOL. 14, ED 3. by PeningtonInstitute Issuu Melanotan II and NAD+ Stack: Summer Tanning Experiment Australians who use tanning products containing 'melanotan' are at risk of serious health problems. These products include nasal sprays and other injectable and ingestible tanning products, and are being illegally promoted and