Melanotan II Simple Peptide There has been a worrying increase in the number of young people using sunbeds. Some people are also using nasal sprays and injections with melanotan II in to boost their tan. This isn't Melanotan 2 Injectable Peptide Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Nasal tanning sprays contain Melanotan II which is banned in the UK and some users have been hospitalised. We would urge residents not to use these products.