TikTok Is Selling You a Tan That Could Give You Melanoma (A Dermatologist Explains) YouTube 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 Australians who use tanning products containing 'melanotan' are at risk of serious health problems. These products include nasal sprays and other injectable and ingestible tanning products, and are being illegally promoted and What is Melanotan II the drug that the TGA urges consumers to avoid?