Nozovent is a nasal dilator. It widens the nostrils to improve airflow and allow you to breathe more freely. Wearing the nasal dilator at night reduces the chance of snoring. You are also less likely to suffer from a dry mouth and coughing, because you breathe through your mouth (unnoticed) while sleeping. The Nozovent nasal dilator is made of soft plastic. That is why it is reusable for 4 to 6 weeks and easy to clean.