Snazaroo works as well...it's a pan type body paint non toxic safe for wherever you might want to put it. Goes on with sponges, and is also water-soluble, which means you can add water and paint it on. It doesn't cake up, moves with skin and allows skin to breathe. Takes a while to go on if you paint it though...just saying.
Did this for a competition...6 and a half hours...she was a trooper.