Mason Pearson B1 Brush Large Extra cleans the hair while stimulating the scalp and increasing blood flow to the roots. Sebum, which is a natural conditioning oil, comes from a gland at the base of every hair follicle and brushing will help to spread it along the length of the hair in order to give it strength and suppleness while providing a healthy sheen. It is ideal for normal, fine or damaged hair. It is comprised of 8 rings of carefully selected stiff bristle tufts, which are set in a rubber cushion, regulating the penetration of each tuft to gently but effectively condition the hair and scalp. This classic and original Mason Pearson 1885 design is handmade with the best materials for you to achieve the best results.