Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Beyond Sleeping Disorders, the Role of Melatonin in Skin Diseases and Emerging Applications in Dermatology and Topical Therapy Melanotan induced priapism: a hard earned tan BMJ Case Reports 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 Melanotan II injection resulting in systemic toxicity and rhabdomyolysis