Melanotan 2 Australia: Instagram push of illegal drug mello, m2 Herald Sun No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Melanotan is trending again. As a dermatologist, I strongly need to tell you , Its an unapproved injectable peptide, and were seeing:, nausea and flushing, darkening of existing moles,