Warning issued over increased use of 'Barbie drug' 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 Think twice before injecting peptides bought online: unauthorized products can seriously harm you Canada.ca Melanotan 1 (10 MG) Sigma Compounds Tanning Nasal Spray Mt2 Nasals Skin Tanners Melanotan 2 Tanning Nasal Spray Melanotan 2 and Skin Tanners Melanotan 2 price