This boar bristle and nylon mix brush is best for normal to thick hair with 5 rings of pure bristle and nylon tufts to stimulate blood flow to the hair roots the density of the bristles allows conditioning sebum to be more evenly distributed from the roots to the ends of the hairregular brushing plays an important part in the condition of your hair brushing spreads essential oils along the length of the hair giving it strength suppleness and producing a healthy sheento maintain the quality