I use Lambert Kay's Oatmeal and Baking Soda shampoo and conditioner on my 3. It smells wonderful and makes them so soft! The conditioner is supposed to be diluted before use, and I just usually dilute it, pour it on them - and then lightly rinse. It says you are allowed to leave a bit of the conditioner on, it adds a bit more softness.

It's really great stuff, and actually when i've ran out of my conditioner i've used it! It smells so great.