Melanotan Erectile Dysfunction: What the Research Actually Shows Melanotan II (Tan Jabs): Why They're Not Worth The Risk 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 longer lasting than Is this injectable tanning drug safe to use? No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Teen Boys and Young Men Are Injecting Peptides in Search of Perfection WSJ