Quality food is a must for skin problems, no corn wheat or soy, no grains at all in some cases. Quality foods have brown rice, pea flour, rice flour, all fillers are grain free. White rice is not as good but acceptable unless you are trying to eliminate all sugars. Omega 3 is important for good skin. Supplementing like Vit E or fish oil including Cod liver oil, can be taken very successfully also. Just remember dogs need twice as much supplement as humans because of their metabolism.