Mason Pearson Pure Bristle Pocket Sensitive SB4 Hair Brush is a more gentle alternative for fine and thinning hair. 5 rings of boar bristle tufts stimulate blood flow to the hair roots, the density of the bristles allow 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 and producing a healthy sheen. To keep your brush in tip-top shape, a cleaner brush is included, as well as complete use and care instructions.