I like Espree products and Minksheen. I recently ordered a gallon of the Minksheen so we will be using it for a looooonnnnngg time!
With Espree, I like the Silky Show Shampoo and the Hypo-allergenic Coconut Luxury Shampoo. I also used the Luxury Remoisturizer. With Minksheen, I do not use an additional conditioner as it contains natural conditioners.
I shampoo mine every 10 days - two weeks and use the baby wipes in between.
If you have a puppy, many go through a period of where the hair on the top of their head looks a little greasy and stringy. That usually is when the hair is changing colors from black to silvery grey to golden tan. Once the color changes more to the golden tan, it stops looking so greasy. At least that has been my experience so far.