Funnyman Chris Rock has turned documentary maker to find out all there is to know about good hair.
The comedian has hit the world's top stylists and hair shows as part of new film Good Hair, which he hopes to debut at the Sundance Film Festival in Utah in January (09).
Rock says, "It's really deep and funny... I did a Michael Moore expose on hair."
The film concentrates on the problems stylish African-Americans have maintaining great hair.
The comic adds, "(It's about) the business of black hair - weaves and relaxers and all this stuff. I even went to India, where they get all the weaves."