Sounds like the first product I used on Max. Something from PetSmart that I can't recall the name of.
There is so much choose from. Most of the ones I like have to be ordered online, unless you have a great local dog boutique or groomer.
My favorites:
Bio-Groom Oatmeal Shampoo with Creme Rinse Conditioner
Isle of Dogs
Vellus
Espree (Jenny sells this on her website
toplinepet.com)
Les Poochs
Pet Silk
#1 All Systems
Chris Christensen
Coat Handlers