Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Imagine just wanting to be jacked and tan and you end up like this? Melanotan II is a peptide that increases the melanin in your skin and can give men a boner that Changes in Oral Mucosa Associated with Melanotan II Injections: A Case Report Tanning from the inside out = Highly Dangerous and Illegal! Many products advertised on social media platforms promising a tan from the inside out or a tan without sun such