He goes behind-the-scenes for a good cause.

Brad Pitt is teaming with Kiehl's, a beauty products company, for a good, green cause. And in doing so, the 'Burn After Reading' star is putting his unique spin on the concept of the celebrity endorsement!

Pitt's famous face and name will be nowhere to be found on any of the beauty firm's commercials or skin, hair and body care goods, says New York magazine. Save for his handwriting reproduced on a new product, he figures in via a purely philanthropic role.

So, how does it work? Kiehl's will debut its Aloe Vera Biodegradable Liquid Body Cleanser (made entirely of biodegradable ingredients) this October, and 100 percent of the profits will go toward raising money for JPF Eco Systems, an environmental charity Pitt co-founded with the beauty company, says NY mag.

Pitt's Make It Right charity, designed to help rebuild New Orleans after Hurricane Katrina, is first in line to benefit from the fund-raising effort --projected to raise more than $1 million, says the mag.

In movie news, Knox and Vivienne's father recently signed on to star in Quentin Tarantino's WWII action flick 'Inglorious Bastards.'