Nasal irrigation is a time tested remedy for cold, stuffy nose, sinus infections and allergies. The process involves rinsing the nasal passage with saline water. It helps in flushing out allergens, microbes and other irritants from the nose. By clearing the nasal passages, it helps you to breathe freely. Nasal irrigation is a good choice for people who want to avoid antibiotics and other pharmacological drugs for treating their sinus problems. Here is a video that shows you how to do nasal irrigation.