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 Moles (melanocytic naevi, pigmented nevi) 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 Types of Moles and Skin Lesions AIM at Melanoma Foundation Spot the difference. About melanoma Moles (melanocytic naevi, pigmented nevi)