Even rock stars suffer from bad skin days.

Music starlettes Katy Perry, Avril Lavigne and "Office" star Jenna Fischer join Proactiv graduates Jessica Simpson, Alicia Keyes and Vanessa Williams as spokesmodels for the popular acne-clearing brand, WWD reports today.

Truth be told, we hear that snagging famous faces doesn't come cheap.

"We are paying people consistently with what we have done in the past, which is millions of dollars," says Ben Van de Bunt, Co-Chief Executive Officer of Guthy-Renker, which owns the brand. Van de Bunt adds the contracts are for at least one year, with an option to extend.

The infomercial-selling line isn't just transforming celebs; it has rejuvenated its own look for the new year to keep top competitors like Johnson & Johnson's Clean & Clear from nipping at its heels with infomercial spots of their own. Proactiv's star ingredient – benzoyl peroxide – has been refined into microcrystals for quicker absorption by pores, and the packaging has been redesigned for a sleeker style and feel.

And if you're up late at night noshing on munchies while flipping through infomercials, you'll be able to consult with a Proactiv product specialist no matter what the hour, starting January 29th.

It's no wonder the brand has become the number one selling acne system in the world; you can order the stuff faster than a Domino's pizza.