Love these combs. I have a small version that is wonderful. However, I ordered this large one, and it was rough on the ends of the teeth. Customer service was very kind and shipped out another, however, it was not much smoother, and within 2 weeks, the teeth on it had broken out of one end. I understand that this is a natural substance from which it is made, but that is a lot of money for something that can not be used. One might think that I may have gripped it too hard and made the teeth break out, but, I have diminished strength in my hands and can't grip anything with strength.