Marilyn New Yorker Midtown Brush includes the finest natural boar bristle tufts with single porcupine effect nylon quills to enable deep penetration for lifting shaping and polishing the hair. The brush glides easily and effectively through the hair massaging and stimulating the scalp while distributing natural oils along the hair shaft. Marilyn New Yorker Midtown Brush is excellent for updos. straight styling extensions and everyday brushing.