TikTok influencers slammed for promoting melanotan as a nasal tanning product The Canberra Times Canberra, ACT 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 #melanotan2 #barbiedrug #skinscience Dustin Portela Melanotan II is the product that's been dubbed the "Barbie drug" on social media, and promises to give users a tan without the sun but it can have serious side effects including, in rare cases,