The Hydra Whitening Shampoo is formulated for professional use on both dogs and cats, and contains an optical brightener that reduces the yellow in the coat. Oatmeal extract moisturizes and softens the coat, contains NO bleaching agents or harsh chemicals. The unique properties of this shampoo make it easier to rinse and allows for faster drying of the coat. This is a professional shampoo designed by groomers for groomers and is suitable for all breeds of dogs and cats.