Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melanotan II 10mg (MT 2) Peptide: Purity Research Melanotan II (MT2) 10mg 24Peptides Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Pharmacological Activation of the Melanocortin System Limits Plaque Inflammation and Ameliorates Vascular Dysfunction in Atherosclerotic Mice Arteriosclerosis, Thrombosis, and Vascular Biology Melanotan 2 is a synthetic peptide researched for its involvement in melanin production and pigmentation studies. It allows scientists to examine skin response and peptide interactions in lab settings.