Understanding Injection Tan and Melanotan 2 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 Melanotan II Safety: Tanning Injection LIVV Natural Melanotan peptide might seem like the cool thing to doit makes you look tan., But these unregulated injections come with real risks., They can cause unpredictable skin changes, including darkening of Avoid those tanning injections! Amy Jayne Aesthetics What is melanotan and why is it so dangerous?