Dog Small & Mini Adult for Sensitive Skin with OptiDerma rich in Salmon dry food. Some dogs have a tendency to itch and scratch more than others. And they may experience more dandruff. Specially formulated by our vets and nutritionists, Purina Pro Plan with OptiDerma provides advanced nutrition that helps support the sensitive skin of adult dogs. OptiDerma includes a specific combination of skin targeting nutrients proven to help support healthy skin and a beautiful coat and selected sources of protein to help reduce possible skin discomfort associated with food sensitivity, helping your dog to live an amazing life.