A nasal rinse flushes warm saltwater through one nostril and out the other, clearing mucus, allergens, and irritants from your sinuses. It takes about two minutes, works with inexpensive equipment, and is recommended by ear, nose, and throat specialists for everything from common colds to chronic sinus problems. Here’s exactly how to do it safely.
What You Need
You’ll need a rinse device, safe water, and a simple salt mixture. For the device, a squeeze bottle designed for nasal rinsing is the easiest option for beginners because you control the flow. Neti pots (small spouted containers) work by gravity and are equally effective. Both are available at most pharmacies for under $15.
The water matters more than the device. Use distilled or sterile water from the store, or boil tap water and let it cool to lukewarm before using it. Never use unboiled tap water. The CDC warns that tap water can contain amoebas, including Naegleria fowleri, that pose no threat if swallowed but can cause a nearly always fatal brain infection if they travel up the nose. This is rare, but entirely preventable by using the right water.
How to Make the Saline Solution
You can buy premixed saline packets, but making your own is simple and costs almost nothing. The American Academy of Allergy, Asthma & Immunology recommends this recipe:
- Dry mix: Combine 3 teaspoons of non-iodized salt with 1 teaspoon of baking soda. Store this in a small airtight container.
- Per rinse: Add 1 teaspoon of the dry mix to 8 ounces (1 cup) of lukewarm distilled or previously boiled water. Stir until dissolved.
- For children: Use a half teaspoon of the mix in 4 ounces of water.
The baking soda buffers the solution so it doesn’t sting. Use non-iodized salt (pickling salt or canning salt works well) because iodine can irritate nasal tissue. The water should feel comfortably warm on your wrist, similar to testing a baby’s bottle. Too hot will burn, and too cold will be uncomfortable.
Step-by-Step Technique
Stand over a sink or do this in the shower. Lean forward, looking down, and turn your head to one side so one ear points toward the sink and the other toward the ceiling. Breathe through your mouth for the entire process.
Place the tip of your squeeze bottle or neti pot spout into your upper nostril, forming a gentle seal. Don’t force it deep inside. Gently squeeze the bottle or tilt the pot so the saline flows into your upper nostril. Within a few seconds, the fluid will circulate through your sinus passages and drain out of your lower nostril (or sometimes out of your mouth). If fluid comes into your mouth, just spit it out. Try not to swallow large amounts.
Use roughly half the solution on one side, then switch. Turn your head the other direction, insert the tip into the opposite nostril, and repeat. When you’ve used all the solution, gently blow your nose over the sink to clear out any remaining fluid and loosened mucus. Blow softly. Forceful blowing can push fluid into your ear canals and cause discomfort.
Aiming the Tip
Stanford Medicine recommends aiming the bottle tip toward the crown of your head, not straight back or toward your eyes. This angle directs the saline into the sinus cavities rather than straight down your throat. If you feel the solution hitting the back of your throat immediately, adjust your head tilt forward a bit more and redirect the tip upward.
Why It Works
Your nasal passages are lined with tiny hair-like structures that sweep mucus toward your throat. When you’re congested or dealing with allergies, the mucus thickens and those sweeping motions slow down. Flushing saline through the sinuses thins the mucus and rehydrates the tissue, which helps restore normal clearance. The physical flow of water also triggers cells in the nasal lining to release more of the body’s natural antimicrobial molecules, improving your ability to fight off infection. In short, rinsing doesn’t just wash out what’s there. It helps your nose work better on its own afterward.
When Nasal Rinsing Helps Most
The American Academy of Otolaryngology recommends saline nasal irrigation for three main situations: the common cold (viral sinus congestion), acute bacterial sinus infections, and chronic sinusitis. For chronic sinus problems, it’s considered a front-line treatment, not just a supplement. Many people also use it during allergy season to rinse pollen and dust from nasal passages before they trigger a full immune response.
For a cold, rinsing once or twice a day can noticeably reduce congestion. For chronic sinusitis, daily rinsing is typical. There’s no strict upper limit on frequency, but most people find one to two times per day sufficient. If your symptoms are seasonal, you can rinse during flare-ups and stop when you feel better.
Cleaning and Replacing Your Device
Wash your rinse bottle or neti pot by hand with soap and warm water after every single use, then let it air dry completely. A damp device sitting on your counter is an ideal environment for bacteria and mold. Don’t rely on a dishwasher. The water jets can’t reach inside the narrow neck of most bottles and pots, so the interior won’t get properly cleaned.
Replace your device every three months, the same schedule you’d follow for a toothbrush. Over time, scratches and residue build up in places you can’t easily clean, even with thorough washing.
Common Problems and Fixes
If the rinse stings or burns, the solution is likely too concentrated or not concentrated enough. Both extremes irritate the tissue. Double-check your measurements. Water temperature can also be the issue: solution that’s too cold causes a sharp, uncomfortable sensation.
If little or no fluid comes out the other side, your nasal passages may be too swollen. Try using a saline nasal spray for a few minutes first to open things up, then attempt the full rinse. You can also try adjusting your head position, tilting slightly more forward.
If you feel pressure in your ears during or after rinsing, you’re likely squeezing the bottle too hard or blowing your nose too forcefully afterward. Use gentle, steady pressure and let gravity do most of the work. Ear pressure typically resolves on its own within a few minutes, but persistent ear pain after rinsing means you should take a break and try again with a lighter touch next time.