Are Moles Preventable and Are They Dangerous? Marietta, GA 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 Moles Everything Skin Clinic The mole guide: what does a cancerous mole look like? Harley Medical Group Most melanomas grow as new spots, not from existing moles Moles v. Melanoma West LA Medical and Skincare : West LA Medical and Skincare