It does what it says on the tin, so no complaints there. However, it feels quite cheap, made of thin plastic that I'm not sure will stand the test of time.
We're using it because we've got it, but I wouldn't buy it again.

Cool bottle but wrong colour. Clean curls were straight on it with sending another but sadly it was the wrong colour again. These things happen and I was very impressed with how quickly they tried to resolve the issue. I love the ethos behind this company :)