this review title is: can dangerously scratch scalp with too stiff sharp bristles and the content is: it is one thing for a brush to stimulate ones scalp but this brush has bristles that are so stiff that they actually scratch the scalp after one use i threw it away and bought a better brush with softer bristles.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.