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 Melanotan What It Is and Its Relation to Skin Cancer No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky This guy injected himself with a drug called Melatonan II for 5 months. Here's his before after. : r pics