If you bath your dog a little too much it can dry the skin out. Innova is a great food, but if your experincing dry skin, look for a food higher in DHA Omega 3/5. Don't get confused with ALA Omega 3.
This article describes the difference.
Article Information- The Benefits of Essential Fatty Acids
Orijen Puppy Food (Has the DHA) or something equivalent or you can supplement with a little Salmon oil.