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 Melanotan II: Tanning injections, nasal sprays harmful to health Emerging Threat: Melanotan, Repackaging, and Online Sales HEALTH CANADA WARNING: POTENTIALLY FATAL Recreational Use of Nitrous Oxide Health Canada warns consumers not to inhale nitrous oxide, also known as laughing gas, recreationally. Sold in retail stores in Canada as Dublin woman earned 20,000 from banned tanning injections The Irish Times Melanotan 2 Nasal Spray Polar Peptides