Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn What are the recent findings on the safety and efficacy of melanotan for therapeutic and cosmetic use? 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 FDA Fast Facts We are alerting the public of the serious health risks posed by the unauthorised substance Melanotan 2, often described as a self tanning aid. We strongly advise members of the public not to