I have curly hair and wear it straight. The only way to properly manage my curl is to use a brush dryer. The only suggestions I would make to the manufacturer is to improve the catch that holds the brush attachment, as it tends to fall off often. Also, I suggest putting the on/off control on the outside of the handle, rather than inside, as someone like me, who uses the brush attachment to straighten my hair when wet, uses it underhand. Thus I keep hitting the control and shutting the unit off accidently. If the brush would stay on better, I'd rate the unit a 5.