Justin Bieber joins storied ranks of spotted pop stars, shills Proactiv

Millions of adolescent girls now wish to be reborn as foaming cleanser.

Justin Bieber is the newest Proactiv spokesperson, following in the footsteps of fellow dermatologically frustrated singers Avril Lavigne, Katy Perry and Jessica Simpson -- and to a lesser extent, the original Proactiv girl, Ms. Judith Light.

The skincare line unveiled its Bieber campaign with a one-minute spot where the singer recounts the three biggest obstacles of any teen: feet that "grow like crazy" [ed: note: whoa, too suggestive!], hormones (which Bieber is just fine with) and zits. For the latter, he's using Proactiv. And probably getting an unimaginable amount of money to admit it.