Melanotan II Results (With Before And After Pictures) The Tanning Drug Brown spots, especially on the lips, can be alarming to some. In some instances it can indicate rare oral mucosal melanoma, however in this case it was a non cancerous labial melanotic macule. What is melanotan and why is it so dangerous? Melanotan II 10mg Pura Peptides Melanotan II Wikipedia COM March 2009 Diagnosis UW School of Dentistry