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 Melanotan II Safety: Tanning Injection LIVV Natural Tanning, fake tan and Melanotan Cancer Research UK 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