I have two brands I really like to use: Bio-Groom and Eqyss. When I used to use a groomer, they used the Biogroom products that I have pasted links here for. I was using the Bio-Groom until I recently switched to EQyss. Now I like that one just as much
PetEdge: Bio-Groom Groom 'N Fresh Conditioning Shampoo PetEdge: Bio-Groom Groom 'n Fresh Creme Rinse Gallon PetEdge: EQyss Premier Pet Shampoo Gallon
I also use this product as a spray in when I brush my Yorkies. It smells really good, makes brushing easier, and is a very light conditioner so the hairy doesn't feel like its weighed down by anything.
PetEdge: EQyss Avocado Mist Conditioner & Detangler Gallon
I also buy the big gallon size so its more economical.