Melanotan is not a tan. It's an unregulated peptide with real risk. As a dermatologist, here's the reality: It has been linked to new and changing moles including cases of Self Tanning & Bronzing Products Holland & Barrett Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky