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 as injectable Melanotan II reverses autistic features in a maternal immune activation mouse model of autism PLOS One 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 No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Love Island generation' skin cancer fear Dangerous' tanning products promoted by influencers BBC News