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 Melanotan vs. Astaxanthin for Glowing Skin 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 2 Peptides Mt2 10 Mg, Color : Transparent, Form : Liquid at Rs 3450 in Nagpur