Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and What is melanotan and why is it so dangerous? Imagine just wanting to be jacked and tan and you end up like this? Melanotan II is a peptide that increases the melanin in your skin and can give men a boner that Melanotan What It Is and Its Relation to Skin Cancer Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider