Product review (4 stars): Easier than a two-handed blowout
I've had this thing for a few months now and it's definitely easier and more convenient than traditional blowout technique. You can use your free hand to hold the segment of hair you're working on, allowing you to use the brush on your roots without over-drying the more delicate ends. There are lots of great youtube tutorials on the use of this device or similar ones that show various techniques. People complaining about how this thing is hard to use or complicated or confusing seem to be confused by objects that rotate in mirrors. Ce la vie I guess.

Pros:
- Frees up one hand to help with styling
- Buttons and switches are easy and intuitive to use
- Seems fairly sturdy; I've dropped mine several times with no breakage
- Good value for the price. I don't regret buying this and think it was probably worth what I spent on it.

Cons:
- Cool air setting DOES NOT rotate. If you want cool air, you cannot use it while the brush rotates. This is a problem for anyone concerned with heat damage, which I am.
- Speed and power of rotation is related to heat/power of air. Hotter air = faster rotation. There is no way to control heat independently of rotation speed.
- Brush size is too small for my personal taste. Since I have 3a curly hair, I use blowouts for straightening, and my blowout curls experience some shrinkage, so the bigger my round brush, the better. I would prefer this brush to be wider than it is.
- Breakage. My ends are bleached, and heat styling is ALWAYS murder on processed hair. I don't think this brush in particular can be blamed for that; I believe any heat styling will exacerbate damage. I'm trying to grow my hair out and the old, bleached ends are breaking away continually. That's pretty much how it goes. However, the design of this brush means the heat and dryness come from the inside-out, meaning the ends of the hair are getting the worst of it. In traditional blowouts, the ends are wrapped up under the middle of the hair, and the hot air comes from above, meaning the delicate ends are somewhat protected during styling. Take this into consideration and be protective of your ends while using this brush.