Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun 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 No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News Melanotan What It Is and Its Relation to Skin Cancer Melanotan 2 Sydney (@MT2Sydney) Facebook