Warning issued over increased use of 'Barbie drug' Melanotan II reverses memory impairment induced by a short term HF diet ScienceDirect 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 Cancer Association of South Africa (CANSA) Fact Sheet and Position Statement on Sunless Tanning