Melatonin 2 Tan Before and After TikTok 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 Dermatologists from @HealthySkin4All say using melanotan 2 is "dangerous" and the only safe tanning method is using fake tan. They're now on the alert for patients presenting with warning signs "an unusually Pyoderma Gangrenosum Secondary to Melanotan Cureus