This boar bristle & nylon mix brush is best for normal to thick hair, with 6 rings of pure bristle & 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 hair. Regular 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 & producing a healthy sheen. To maintain the quality of the Mason Pearson hairbrush it is not mass produced. Most of the work is carried out by h&, using techniques pioneered & patented by the founder Mason Pearson over one hundred years ago & enhanced over succeeding generations.