Yes, if you apply it! By making your nose stuffy, your organism protects itself from over-breathing: it simply narrows air ways. Buteyko Breathing specialists will teach you how to reduce your breathing and that will eliminate the root of your problem. Aside from that, you will learn a special technique, which Dr. Buteyko developed for clearing nasal passages. You can use it any time you feel a need to unblock your nose. It is a gentle technique and, unlike many others, does not cause additional hyperventilation and mucus creation.