A neti pot works by using gravity to pull a stream of salt water into one nostril, through your nasal passages, and out the other nostril. As the solution flows through, it physically flushes out mucus, allergens, dust, and bacteria that have collected along the lining of your sinuses. The process also thins sticky mucus, reduces swelling in the nasal tissue, and helps the tiny hair-like structures in your nose (called cilia) do their job of moving debris out more efficiently.
What Happens Inside Your Nose
Your nasal passages are lined with a thin layer of mucus that sits on top of millions of microscopic cilia. These cilia beat in coordinated waves to push mucus, along with trapped particles, toward the back of your throat where it’s swallowed harmlessly. When you’re congested from allergies, a cold, or a sinus infection, this system slows down. The mucus thickens, the tissue swells, and the cilia can’t clear things efficiently.
Saline irrigation tackles all three problems at once. The flow of water physically washes away thick mucus and the irritants trapped in it. The salt in the solution pulls excess water out of swollen nasal tissue through osmosis, which reduces congestion. And the gentle pressure of the flowing liquid stimulates the cells lining your nasal passages to release more thin, watery fluid and increase cilia activity. The result is that your nose’s natural cleaning system gets a reset. In one study of patients with chronic sinus problems, daily nasal rinsing improved symptom severity by more than 60%.
Isotonic vs. Hypertonic Solutions
The salt concentration in your rinse matters. Most neti pot packets create an isotonic solution, meaning the salt concentration (0.9%) matches the salt level in your body’s cells. This is gentle, comfortable, and effective for routine rinsing and general congestion.
Hypertonic solutions use a higher salt concentration, typically around 2 to 3%. Because the solution is saltier than your body’s cells, it draws water out of swollen nasal tissue more aggressively. This makes hypertonic rinses particularly effective when you’re dealing with significant congestion, thick mucus, or post-surgical swelling. The tradeoff is that hypertonic solutions can sting or feel uncomfortable, especially if your nasal tissue is already irritated. If you’re new to nasal rinsing, start with isotonic and adjust from there.
How to Use a Neti Pot
Fill the pot with your prepared saline solution at a lukewarm temperature. Lean over a sink and tilt your head forward and to one side. Place the spout snugly against your upper nostril and let the solution flow in. Gravity does the work. The water travels through your nasal cavity and drains out the lower nostril. Breathe through your mouth the entire time.
If solution runs down the back of your throat, your head isn’t tilted far enough forward. If you feel pressure in your ears, you may be tilting to the side too much or pouring too quickly. After rinsing one side, gently blow your nose, then repeat on the other side. The whole process takes about two minutes.
Water Safety Is Critical
This is the one part of neti pot use where you cannot cut corners. Tap water is safe to drink because your stomach acid kills most organisms, but your nasal passages have no such defense. Tap water can contain amoebas, most notably Naegleria fowleri, which causes a nearly always fatal brain infection when it enters through the nose. Cases are rare but preventable.
The CDC recommends using only these types of water for nasal rinsing:
- Distilled or sterile water purchased from a store (the label will say “distilled” or “sterile”)
- Boiled and cooled tap water, brought to a rolling boil for 1 minute (3 minutes at elevations above 6,500 feet), then cooled to lukewarm
- Filtered water passed through a filter specifically designed to trap infectious organisms
If you boil water in advance, store it in a clean, sealed container and use it within 24 hours. As a last resort, you can disinfect water with unscented household bleach: about 5 drops per quart for standard-concentration bleach, stirred and left to sit for at least 30 minutes.
Side Effects and When to Stop
Mild stinging or a brief burning sensation is common, especially with hypertonic solutions or if the water temperature is off. This usually passes quickly and isn’t a sign of a problem. Some people notice a small amount of solution draining from the nose for 30 to 60 minutes after rinsing, which is normal.
Ear pressure or a feeling that you need to pop your ears is a sign something’s off with your technique. This happens when solution enters the Eustachian tubes connecting your nasal passages to your middle ear. If you notice this, make sure you’re tilting your head forward (not just to the side) and that you’re pouring slowly. If ear discomfort persists, stop using the neti pot and try a gentler method like a saline spray bottle.
Keeping Your Neti Pot Clean
Biofilm, a thin layer of bacteria, can build up on any surface that’s regularly exposed to moisture. After each use, wash your neti pot thoroughly with distilled, sterile, or previously boiled water and a small amount of soap. Let it air dry completely between uses, ideally upside down on a clean towel. Replace plastic neti pots every few months. Ceramic pots last longer but still need consistent cleaning.
Who Can Use a Neti Pot
Nasal irrigation is safe for most adults and for children who can sit up and lean forward on their own, generally around 9 months of age. For babies and toddlers, a bulb syringe or saline drops are easier to manage than a traditional neti pot. Older children can use a squeeze bottle, which gives more control over the flow than a gravity-fed pot.
People with frequent nosebleeds, a deviated septum, or nasal polyps may find rinsing uncomfortable or less effective. If you’ve had nasal or sinus surgery, check with your surgeon about when to start rinsing and what solution concentration to use, since hypertonic rinses are sometimes specifically recommended for post-surgical recovery.