We are obligate nasal breathers from birth. This means that we are designed to breathe through our nose and not through our mouth. Many people who can't breathe well through their nose turn to over-the-counter remedies. However, using over-the-counter decongestant sprays can cause rebound congestion in the nose that can lead to addiction. It is not safe to use these decongestant sprays daily and irreversible damage can occur. Learn about an alternative, safe way to lessen congestion.