What kind of brush does one need while blow drying the hair?

For straightening hair, use a round brush with the densely packed and firm boar bristles, the bigger the brush the straighter the hair. Avoid a style that needs precision drying if you are not very dexterous. A plastic brush with wide spaced bristles achieves movement and lift while a vent brush allows air to circulate directly at the root level. Fine hair needs soft bristles to protect it while firm bristles will smooth thick or curly hair. Damaged or fragile hair needs a gentle brush made of pliable plastic.