Does the Hair Straightening Brush Work?!

I received the straightening hair brush from My Makeup Brush Set in the mail back when I was in hair school. Here's a detailed review of this brush that is popping up everywhere. 

The straightening hair brush goes to 230C (450F) and promises to straighten and smooth hair like a flat iron. The idea is that you won't need to brush your hair - it will do it for you! I doubted this as soon as I saw it. I'm cautious by nature and this gave me a bad vibe. It looked gimmicky. 

But, to give it the benefit of the doubt, I went ahead and tried smoothing out my mannequin's hair. Yes, mannequin hair is almost always tangly and gross, but I had to try it. It didn't work. As far as smoothing the hair goes, it smoothed the hair shaft, minus the roots (you can't get to the roots), and left the ends frizzy. 

To make a long story short, the hair brush will NOT give you the results of a great blow-out, or a professional flat iron. The reason is, mainly, that there is no tension and it heats from only one side. 

If you are thinking of buying this brush, I don't recommend it. If you have really thick and unruly hair, it might work for you. 

My other issue with it is that you would have to go over the hair many times before you get it to smooth out, which can result in damage over time. 

All in all, I'm not a fan.