I use Earthbath, they have many kinds: oatmeal, aloe vera, hypoallergenic. I use the hypoallergenic kind because my Chibi has sensitive skin (he gets rashes easily). The best part is that it is tear free and doesn't harm the environment. They also have conditioner. His fur is soft and silky after a bath. You can get it on Amazon or at many pet stores.
You can check it out here:
Pints :: earthbath® - totally natural pet care