Avoid those tanning injections! Amy Jayne Aesthetics Doctors warn against tan injections 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 Repost: @funct.med.curtis Pop NBC Melanotan II is often known for its tanning effects, but research shows it may do much more than that. It interacts with several melanocortin receptors throughout the