Melanotan Tanning Injections The Low Down Lynton Lasers Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn 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 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