Melanotan (MT) II Melanocortin Receptor Agonist MedChemExpress Avoid those tanning injections! Amy Jayne Aesthetics Peptides are having a moment, but not all of them are harmless., One thats getting a lot of attention right now? Melanotan II., Its being used to achieve a tan from the inside, but what it 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