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 Nasal tanning sprays warning issued by Trading Standards Nasal tanning sprays and oral tanning drops are often marketed as quick fixes for glowing skin but these products are unregulated in the UK, with unknown ingredients, dosing, and formulation. They have Burn notice: Gen Z and the terrifying rise of extreme tanning Health & wellbeing The Guardian Say NO to tanning injections and nasal sprays. They are illegal in the UK and have serious, harmful side effects