Melanotan II an overview ScienceDirect Topics Here's the part nobody explains when they're selling you the "Barbie drug.", , Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin cells to Melanotan is not a tan. It's an unregulated peptide with real risk. As a dermatologist, here's the reality: It has been linked to new and changing moles including cases of Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Amazon.com: Radiant Chemistry : Unveiling the secrets of Melanotan II and it's Effects on Desire eBook : James, Nicolas : Kindle Store