Review (4/5): Overall good product.
This brush works well. I use it for myself when I need a touch up or to get my hair overall straight. I use it more for my 7 year old daughter. She hates to sit still for a blow dryer and her hair is a mess when she lets it dry on the pillow at night. Takes 5 minutes to smooth it before the bus picks her up for school. It's been a lifesaver for her.
However, I would not use this as a replacement for a flatiron or blowdryer. You can't possibly hold the hair taught enough to get it completely smooth on the ends. So while I use it to smooth my roots and above my ends, I hit my ends with a flat iron to get them smooth. The photos attached show what my ends look like with just this product and the second photo is the smoothness I get when hitting it with a flatiron right after.
Overall I am pleased with this product. I definitely recommend.