I bought a long time for a rotating hot air brush and have always been skeptical about whether that really does everything so well. I bought the device because of the positive reviews and have been unfortunately very disappointed. Although the brush works well but my hair (I have medium length and rather fine hair) did not take the form but are just electrifying. Not even at the lower tips I get pure form, whatever works great with a normal round brush and hair dryer. More volume I can not get this also. I also think that the rotary head is too big to get beautiful curved hair. My round brush is small and thus it works great. In any case, thumbs down, and the unit returns!