Melanotan II (Tan Jabs): Why They're Not Worth The Risk 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 Tanning from the inside out = Highly Dangerous and Illegal!, Many products advertised on social media platforms promising a tan from the inside out or a tan without sun such as injectable Melanotan Tanning Injections The Low Down Lynton Lasers Nasal tanning sprays linked to skin cancer, trading standards officers warn Consumer affairs The Guardian Young people targeted online by sellers of 'dangerous and illegal' tanning products, HPRA warns Irish Independent