Impossible to use in the shower
If you intend use this brush in the shower to detangle wet, conditioned hair, I suggest you look elsewhere. There is no way to get a grip on this brush. The handle virtually non-existent  The back is curved and it hasn't a single corner against which to anchor your hand. It is made of smooth plastic that is slippery when wet.  By definition tangled hair is going to offer some resistance and  I spend half of my time picking this brush up from the floor after it slips out of my hands. I gave it one point because it really does detangle hair, but I will glad when I can replace it and trash it.
Rating: 2 stars