NASAL NALOXONE (NARCAN KLOXXADO GENERIC) ADMINISTRATION PROTOCOL Border agents seize 'Barbie drug' NZ Herald 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 Nasal tanning sprays linked to skin cancer, trading standards officers warn Consumer affairs The Guardian No, You Don't Need The 'Barbie drug' To Tan. Here's Why Melanotan II Is So Risky MELANOTAN 1 (10mg) stimulation of melanin synthesis.