Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News 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 Imagine just wanting to be jacked and tan and you end up like this? Melanotan II is a peptide that increases the melanin in your skin and can give men a boner that Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically 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