this review title is: does not work for me and the content is: when i first got it and put batteries in the lock would not stay in place so the back kept falling out i returned it and had another one sent to me i love the feel of the brush on my scalp but my hair is no less frizzy i hear the hum and know it is working ok it just does not de frizz my hair and the massager part is too light to feel anything good i will not return another one so i just have a plain old brush now.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.