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 A Sun Kissed Look, and a Confident You. 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 PDF) Increasing illegal use of Melanotan: The Barbie drug hype Background Melanotan II is a peptide that supports melanin production meaning your glow can start from the inside out (without living out in the sun or tanning beds). Our WCC nurses