The NON SHEDDER shampoo is formulated for non shedding dogs who have hair, which is usually longer and finer than dogs with fur (shedders). Non shedders can have straight, wavy or curly hair that grows in a single layer. They typically shed very little or not at all. THE NON SHEDDER has marshmallow root which is hydrating, moisturizing, and detangling. Marshmallow root is a natural oil that we source from Northern Africa. The SHEDDER shampoo is formulated for shedding dogs who have fur, which is much denser. They often have an undercoat that is shorter and you will notice more of it on your furniture and yourself during different points in the season.