Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically Melanotan 2 Achieve Sunless Tan Naturally and Safely Here's the part nobody explains when they're selling you the "Barbie drug.", Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin cells to Melanotan II synthetic tanning drug mo Stock Image Science Source Images