Minksheen is a very good shampoo, and has oils in it to help with the dogs skin. Here is the link where it can be purchased. I have only found it on the internet.
http://www.touchofmink.com/catalog.asp?v=misc The information below is off the site. I use it on all my dogs, both show dogs and pets. I love the smell of cedar that is in it.
MinkSheen Pet Shampoo's rich lather will gently clean your pet without leaving it's skin dry or irritated. Mink Oil leaves a soft, shiny, "show" quality coat, while Vitamin E soothes and prevents "hot spots". The Cedar and Citronella oils will naturally repel fleas and ticks while leaving your pet smelling great for days!
The added benefit of an anti-bacterial will protect both you and your pet from the spread of harmful germs and bacteria. Used nation-wide by professional groomers that want a safe, gentle, natural shampoo