Tanning, fake tan and Melanotan Cancer Research UK Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melatonin overdoses in children are on the rise. Here's what parents need to know. UK Healthcare Melatonin Overdose: What You Should Know GoodRx Beyond Sleeping Disorders, the Role of Melatonin in Skin Diseases and Emerging Applications in Dermatology and Topical Therapy 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