Professional All Purpose Spa Brush with a blend of nylon bristles and 100% boar bristles. The unique structure of the boar bristles distributes the natural oils from the roots to the ends. The boar bristles and nylon bristles stimulate the scalp and help detangle the hair. Regular brushing with the All Purpose Spa Brush prevents the build-up of oils on the scalp which makes the hair greasy. It stimulates the scalp and increases blood flow, improving hair growth. Mix of 100% boar hair and nylon bristles For hair with extensions, thick hair and medium to long hair Detangles the hair without pulling the hair