Many friends around me are using nose clips. Some of them said it was very useful, while others thought it had no effect at all. So I have come to a conclusion: the effect of nose clip depends on the hardness of your nose itself. If your nose bone is soft, it will still have some effect as long as you continue to use it. But if your nose bone is hard, it will be more difficult to sharpen your nose (at least after my sisters have used it). Moreover, the nose clip should be used correctly and cannot be operated blindly. It's not good if you accidentally deform your nose. So read the instructions carefully before buying, and of course buy a better nose clip. Don't be greedy and cheap! Having said that, I still advise LZ not to make a hasty decision whether to buy or not. You'd better try the hardness of your nose before you come to a conclusion!