There are several good pet shampoo's and conditioners. You should use one made for dogs because they have a different PH than we do. Espree has some good ones for dry skin. Here is the link for it
http://www.espree.com I use minksheen on my show dogs, and use petsilk conditioner. Mink sheen shampoo has both cedar oil, and oil of citronilla. You can get Minksheen here
http://www.touchofmink.com/prod_details.asp?id=15