Some ear, nose, and throat surgeons recommend nasal irrigation with a Neti pot or other method for their patients who’ve undergone sinus surgery, to clear away crusting in the nasal passages. Many people with sinus symptoms from allergies and environmental irritants also have begun to regularly use the Neti pot or other nasal irrigation devices, claiming that these devices alleviate congestion, and facial pain and pressure. Research backs up these claims, finding that nasal irrigation can be an effective way to relieve sinus symptoms when used along with standard sinus treatments. For some people, nasal irrigation may bring relief of sinus symptoms without the use of medications.
The basic explanation of how the Neti pot works is that it thins mucus and helps flush it out of the nasal passages.
A more biological explanation for how the Neti pot works has to do with tiny, hair-like structures called cilia that line the inside of the nasal and sinus cavities. These cilia wave back and forth to push mucus either to the back of the throat where it can be swallowed, or to the nose to be blown out. Saline solution can help increase the speed and improve coordination of the cilia so that they may more effectively remove the allergens and other irritants that cause sinus problems.