Nasal tanning sprays linked to cancer sold online what are they and are they legal? ITV News 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 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 Fake tanning Melanoma Fund UK Change in moles linked to use of unlicensed sun tan jab The BMJ