The brush itself is perfect I must say. The design really well studied, it is small enough to fit easily in a purse and large enough to offer a good grip. It is very comfortable to hold (although a bit heavier than a regular brush) and colors, metallic black and gray makes it a very attractive product.
In terms of brushing, I think (I have fine hair, which border and are quite fragile) it breaks more hair brushing my usual brush, because I think its pretty hard pimples.
My hair is softer and shinier while I have not changed anything in my treatment protocol, the "ions" must be effective, even if the green light activates when the diffuser is pretty gadget.
By cons I have seen no effect on static electricity, a real disappointment my hair is very electric.
Finally a brush that provides a real plus compared to a conventional hair brush, and nomadic practice but we should not expect miraculous effects, it remains a brush after all!