The skin is the body's first line of defense against the external environment and is crucial in maintaining the body's internal environment. Royal Canin Adult Beauty Loaf helps to support the skin's role as a barrier through a combination of nutrients, including an exclusive complex of four B vitamins and one amino acid, anti-inflammatory omega 3 fatty acids (EPA and DHA), vitamin A, biotin, zinc and a combination of antioxidants. It also helps support a strong, glossy coat and provides high quality, low indigestible proteins which help promote absorption and utilization by the body.