There has been a worrying increase in the number of young people using sunbeds. Some people are also using nasal sprays and injections with melanotan II in to boost their tan. This isn't 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 Melanotan injections are sold illegally and possibly unsafe Cancer Research UK Cancer News