Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Amber Haque buys different versions of Melanotan 2, an illegal weight loss product also known as the Barbie drug and sends it to a laboratory for testing., If you need support for any of these 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 Evolve VIP Memberships in Waterloo, IA Monthly Savings