I use Chris Christensen products.... [the Day to Day or the Spectrum Ten...] but when Riley started getting environmental allergies, last year the Vet told me to get some shampoo with oatmeal in it. I bought some Tropiclean from a pet boutique. I Looooooove It!! They have several different ones. The one I used was the medicated oatmeal w/tea tree. I would Highly recommend it to anyone.
Tropiclean Products
Here is the oatmeal one:
Oatmeal & Tea Tree - Medicated Shampoo