I only use "Yorkie Splash" Shampoo and "Yorkie Shine" Conditioner that is made specifically for a Yorkshire Terrier's coat by a breeder who shows Yorkies
It's made with all natural, ingredients and has a ph of over 9. It smells wonderful, and leaves Sophie's hair feeling silky soft and looking great. You can find it and read more about it on the "Yorkies of Walnut Hills" web site.