That quick tan injection is NOT worth the risk., Melanotan peptide injections stimulate pigment cells, and its use has been linked to rapid changes in moles, including the potentially fatal skin Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Melanotan II Complete Guide Tanning Response, UV Sensitivity, Pigmentation Science & Appetite Libido Effects (2025 Research Breakdown) : r USPeptides Melanotan II, Barbie drug: Illegal injection could slowly kill people desperate for a tan news.com.au Australia's leading news site for latest headlines