I use Burt's Bees shampoo and conditioner(sugar beet and grapefruit). I switched to them because they don't use any laurel/lauryl sulfate(makes the shampoo have a thick lather) which irritates the heck out of my skin. I don't use gel or anything like that, though, so I can't help you with a personal preference, but here are some search results:
Also, the last link will be for using henna to dye hair(I've been thinking of using it because of my sensitive skin)
www.jason-natural.com