There can be a variety of reasons for your dog's itchy, scratchy skin condition, including sensitivities to food. The good news is, most pets with these skin conditions can benefit simply by eating the right food. At Hills, nutritionists and veterinarians have developed clinical nutrition especially formulated to help your dog with a variety of skin conditions, and digestive discomfort due to food sensitivity. * Highly digestible single intact animal protein source and single carbohydrate source to help avoid common food sensitivities * High levels of omega-6 and omega-3 fatty acids that help nourish the skin and coat * Combination of antioxidants helps maintain a healthy immune system and skin barrier function * Four different novel protein sources to provide more choices in managing food sensitivityThis food requires a veterinary prescription.Hill's is updating their Prescription Diet packaging and a portion of the name. With Prescription Diet d/d, the current descriptor is "Skin Support"; in 2015 it will be "Skin/Food Sensitivities".