Nasal tanning sprays linked to cancer sold online what are they and are they legal? ITV News Tanning Nasal Spray: Should You Skip It? Reacting to TikTok Melanotan Nasal Spray Challenge Melanotan What It Is and Its Relation to Skin Cancer Nasal tanning sprays linked to skin cancer, trading standards officers warn Consumer affairs The Guardian 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