The Dangers of Melanot*n II Explained TikTok 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 Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and longer lasting than Melanoma Fund Archives Melanoma Fund UK The Risks of Fast Tanning 'Barbie Drug' Explained Ever Clinic No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky