Yes, it works
I wasn't sure about this purchase since it has mixed reviews.  My daughter has long, thick, course, wavy, frizzy hair.  Overall, I'm very happy with the results this brush gives.  Yes, it does take a bit of time with her hair type.  You have to go in small sections and sometimes brush over the same area a few times (slowly),  but it does work.  She has A LOT of hair, and I can usually get it all done in about 10 minutes.  Afterwards, her hair is soft and shiny and it looks much better.
Rating: 4 stars