What hair styling product does this guy use?

Wax? Gel? Mousse? Grease?





http://yfrog.com/jqdsfdsjp





And how do I style my hair that way?What hair styling product does this guy use?
His hair looks dirty. I guess the last time he washed his hair was 6 or 7 months ago. He's not using styling products I guess. But if he does, that looks like wax.What hair styling product does this guy use?
Gel. Just style it with your hand with no combs.