Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Melanotan II an overview ScienceDirect Topics Melanotan II: Tanning injections, nasal sprays harmful to health You Should Avoid Using Nasal Tanning Sprays 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