Sort of difficult to use.

This brush is heated in the "bristles" instead of in the brush itself which makes the "bristles" very large and it is somewhat difficult to get your hair, (or my hair anyway) to slide through the brush. I sort of had to hold the hair tightly at the end by one hand and use the force the brush through the hair with the other hand to get it to work. It was very cumbersome. It did sort of straighten my hair but I gave up before finishing because it was really too much work. 
It's not horrible, but I won't be mentioning to anyone to buy.