Melanotan II (MT II) Peptide Therapy Beverly Hills Melanotan injections are sold illegally and possibly unsafe Cancer Research UK Cancer News 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 There has been a worrying increase in the number of young people using sunbeds. Some people are also using nasal sprays and injections with melanotan II in to boost their tan. This isn't Melanotan II Wikipedia