Product review (3 stars): It works best on medium length layers
I bought this styler about 5 yrs ago and rarely used it because it does not get hot enough and the spinning action is hard to use.  It works best on medium length layers.  It straightens hair more than curling it. I have fine, shoulder-length, straight hair with long layers, and medium thickness.  If hair is too short it will not wrap around the brush because it is very large.  If hair is too long I can image that hair would be snagged in the brush.  Even my hair snapped if I was not careful enough.  Without the spin the brush does not grasp hair very well so using it just a brush did not work well.  But for me the main problem was that I did not get the volume I wanted because of the lack of heat.  Although I rarely used it in five years, I just noticed that motor on the spin action is weakening and it spins very slowly (every once in a while I take it out and try to use it again). Rather than buy this brush again, I will experiment with another brand and hope that I like it better.