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 Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically Get a tan that lasts with melanotan tanning injections! Melanotan stimulates melanin production in the skin, the pigment responsible for giving us that coveted bronzed look. With regular injections, you can achieve Eruptive naevi and darkening of preexisting naevi 24 h after a single mono dose injection of melanotan II Semantic Scholar