Warning issued over increased use of 'Barbie drug' Hannah Tittensor and her boyfriend Ben Dunlop have been injecting themselves with an illegal tanning drug called Melanotan for three years. On top of that, they use sunbeds regularly and slather themselves Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News Nasal tanners claim to work by using Melanotan II, a chemical that darkens skin pigmentation. It is illegal to sell medicinal products containing Melanotan II in the UK but since the tanners are sold Melanotan What It Is and Its Relation to Skin Cancer