Teeth break off very quickly. Check the base of the bristles.
I've owned these about a month now, so I figure I can give a full review of their quality. While I love the price and love these types of brushes for my thick, long, curly hair, I don't love the fact that I was loosing bristles as soon as the third brushing. I think it is because the teeth are straight up instead of slightly wider at base like other ones. Because of this, they bend at the base and snap right off the brush head and get stuck on your head. In my case, on the one I'm using now, the side with the slight curve has lost almost all of it's bristles. Even though the other side has almost all of the bristles on that side, it now means this brush is missing half of it's bristles, which is just... terrible durability. I got these to replace a Goody brand brush I had lost and then found after ordering, and I would recommend that over these so much. These are cheaper, but having to buy new ones every month is so stupid. Even if you don't opt for Goody, take a good look at the photos of the ones you want to buy and make sure that they aren't straight up and down on the teeth like these ones are. A slightly thicker base on the bristles will help them stay attached to the brush (and seem to make them work over my hair a little easier too)
Rating: 2 stars