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 IMB issues warning over tanning injections at salons or bought on internet The Irish Times Watch Me Tan with Melanotan 2 MT2 Year 2 Results, Side Effects, & My Full Protocol 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