This Review Title is Useful, but serious design flaw and the content is: It definitely straightened my hair, when used with a detangler/heat protectant. However, because the temperature controls are on the side, I keep turning down the temperature without meaning too. This would be 5 stars, but the design of the brush is too hindering to use without being constantly conscious of your hand placement..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.