I think I have finally found it! After hundreds of dollars and every single dog and human brand from Pantene, to Isle of dogs, to Ziggys to The hot oil treatments, I found something pretty remarkable for the white cottony frizzy hair. I gave her a bath a week ago and was so impressed, but decided to wait a week (our normal time before the next bath) and re-evaluate, and her coat is still soft and I may even venture to say she's had less matting this week (of course that can be from other factors too as to laying around and loafing more on one side than the other,, lol) Its pretty great stuff though and worth a try if you have the white hard to silk-ify coats
I bought it on Amazon and it is called "fur butter", the raving 5 star reviews (and hour long dematting sessions) pushed me into spending the $19, and I think I am going to go back and buy the shampoo and other products from the company. As for use, the container is 8 oz and we used about 1 oz, it looks like I have at least 6 more baths worth of product, so its marginal when you look at it that way, $3 a bath.
Then again, i also used new shampoo and conditioner from Royal Treatment Pet shampoo, I used the Pumpkin patch and nutmeg shampoo and conditioner mixed with fur butter, so I am going to switch up the shampoo next time and make sure I am isolating the winner and its not a combo effect. The royal treatment has a bunch of various natural oils in it , idk..I know I went on an expensive dog shampoo and conditioner shopping spree last week and my credit card bills are rolling in...
(no, I am not affiliated with this product, I just think it works pretty awesome on the cottony parts of a coat)