Boar Bristle & Nylon Tufts generally used for normal to thick hair. A Mason Pearson hairbrush is designed to provide many years of quality usage. Regular brushing plays an important part in the condition of your hair. The Mason Pearson Hairbrush cleans the hair, stimulates the scalp increasing the blood flow to the hair roots. A natural conditioning oil - sebum - comes from the hair giving it strength, suppleness and 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 hand, using techniques pioneered and patented by the founder - Mason Pearson - over one hundred years ago and improved over succeeding generations.