Melanotan II: Tanning injections, nasal sprays harmful to health Nasal sprays containing the 'Barbie Drug' melanotan are very, very dangerous and completely unregulated, according to leading dermatologist. Experts say there has been a surge in the use of the illegal tanning aid Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn 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 Afamelanotide Wikipedia Changes in Oral Mucosa Associated with Melanotan II Injections: A Case Report