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 Self confessed tanning addict Hannah has been using illegal tanning injections for three years and has no plans to stop Crackdown over 'Barbie' tanning drug It doesn't take much to fall down the Barbie Drug rabbit hole. In self tanner subreddits and on TikTok Shop, the tanning injectionaka Melanotan IIis marketed as a self tanner alternative that works by