Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Melanotan What It Is and Its Relation to Skin Cancer Emerging Threat: Melanotan, Repackaging, and Online Sales Melanotan II PERMANENTLY Darkened My Skin! I accidentally undid years of skin work and didnt realize it until it was too late., At the beginning of November, I started taking melanotan 2 and honestly?, I loved it., My tan deepened