I think it is necessary to eat seaweed powder, because seaweed powder can not only prevent hair from drying off and promote the growth of new hair, but also help hair to return to natural color, help pigment to precipitate, and effectively keep the nose black. If conditions permit, you can give dogs more seaweed powder, because it is a natural thing, and eating too much will make your pet's hair color feel better, just mix it with dog food at ordinary times.