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 What is melanotan and why is it so dangerous? We are alerting the public of the serious health risks posed by the unauthorised substance Melanotan 2, often described as a self tanning aid. We strongly advise members of the public not to Dangerous' tanning products promoted by influencers