Sun and Skin: From Burns to Melanoma, What Every Clinician Needs to Know and Share Warning issued over increased use of 'Barbie drug' Targeting melanocortin receptors: an approach to treat weight disorders and sexual dysfunction Nature Reviews Drug Discovery Melanotan II: Tanning injections, nasal sprays harmful to health 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 and the Posterior Reversible Encephalopathy Syndrome Annals of Internal Medicine