These nylon bristles are soft on your pet’s coat and safe! These bristles does not scratch your pet’s skin. The bristles are designed to penetrate deep into the coat and is really able to groom the undercoat well without irritating your pet’s skin! This large nylon slicker brush comes with a large head size to cover a large section of hair. Also, it helps to remove the mats and tangles quickly. You can start grooming your dog or cat quickly and will see results within minutes. It gently removes loose hair, and eliminates tangles, knots, dander and trapped dirt. Works great on dogs and cats with all sizes and hair types!