A nasal rinse flushes saline solution through one nostril and out the other, clearing mucus, allergens, and irritants from your nasal passages. The process takes about two minutes once you get the hang of it, and the key details that matter most are using safe water, getting the salt ratio right, and tilting your head correctly.
What You Need
You have a few device options. A neti pot is a small teapot-shaped container that uses gravity to flow water through your nose. A squeeze bottle lets you push the solution through with gentle pressure. Both work, but a randomized trial of 116 patients with allergic rhinitis found that squeeze bottles produced significantly greater improvement in nasal symptom scores over four weeks compared to syringes. The positive pressure from squeezing reaches further into the sinus cavities than gravity alone. Both devices had excellent satisfaction scores and no adverse events.
Beyond the device, you need non-iodized salt (pickling salt or canning salt works well), baking soda, and safe water.
Water Safety Is Non-Negotiable
Tap water straight from the faucet is not safe for nasal rinsing. It can contain low levels of bacteria and amoebas that are harmless to swallow but dangerous when introduced directly into your nasal passages. The FDA specifies three acceptable water types:
- Distilled or sterile water purchased from a store (the label will say “distilled” or “sterile”)
- Boiled tap water that has been boiled for 3 to 5 minutes, then cooled to lukewarm
- Filtered water passed through a filter specifically designed to trap infectious organisms
If you rinse daily, boiling a batch of water and storing it in a clean container is the most economical approach. Just make sure it has cooled enough before you use it. The solution should feel comfortably warm, not hot.
How to Mix the Saline Solution
The American Academy of Allergy, Asthma & Immunology recommends this recipe: mix 3 teaspoons of non-iodized salt with 1 teaspoon of baking soda and store the dry mixture in a small airtight container. When you’re ready to rinse, add 1 teaspoon of this mixture to 8 ounces (1 cup) of lukewarm safe water. For children, use half a teaspoon of the mixture in 4 ounces of water.
The baking soda acts as a buffer that prevents the solution from stinging. Getting the salt concentration right matters. Too little salt and the rinse will burn. Too much and it will feel uncomfortably drying. The recipe above creates an isotonic solution, meaning it matches the salt concentration of your body’s own fluids. Some people prefer a slightly saltier (hypertonic) rinse for heavier congestion, but the standard ratio is the best starting point.
Step-by-Step Technique
Stand or sit over a sink. Tilt your head forward so you’re looking down into the basin. This forward tilt is important: it prevents the solution from running down the back of your throat. Then rotate your head slightly to one side, about 45 degrees, so one nostril is higher than the other.
Place the spout of your neti pot or the tip of your squeeze bottle snugly against the upper nostril. If you’re using a neti pot, lift it and let gravity pull the water through. If you’re using a squeeze bottle, apply gentle, steady pressure. Breathe through your mouth during the entire process. The solution will flow through your upper nostril, travel through the nasal cavity, and drain out the lower nostril into the sink.
Use about half the solution on one side, then switch. Tilt your head the other direction, insert the device into the other nostril, and repeat. When you’re finished, gently blow your nose to clear any remaining solution. Avoid blowing hard, which can push fluid into your ear canals.
A few things to expect the first time: you might cough or feel a brief tickle if some solution reaches the back of your throat. Adjusting your head position forward usually fixes this. Some solution may also drain from your nose for 15 to 20 minutes afterward, so keep tissues nearby.
Why It Works
Nasal rinsing does more than simply wash out visible mucus. The saline solution restores and improves the function of the tiny hair-like structures (cilia) lining your nasal passages. These cilia beat in coordinated waves to sweep mucus, bacteria, and debris toward the throat for disposal. In conditions like chronic sinusitis, ciliary function deteriorates due to changes in mucus thickness and a drop in how fast the cilia beat. Regular rinsing helps reverse both problems, thinning the mucus layer and increasing the effectiveness of ciliary beating.
Cleaning Your Device
After every use, rinse the device thoroughly with safe water (the same type you use for the rinse itself, not tap water) and allow it to air dry completely. A damp neti pot or squeeze bottle sitting on a counter becomes a breeding ground for bacteria and mold. Leave it open and upside down so air circulates inside.
Replace squeeze bottles every few months, since the interior surfaces can develop biofilm that’s difficult to remove even with cleaning. Ceramic and stainless steel neti pots last longer but should still be washed with hot water and allowed to dry fully between uses. Never share your device with another person.
How Often to Rinse
For active congestion from a cold, sinus infection, or allergy flare, once or twice daily is typical. Many people rinse in the morning and again before bed during allergy season. For long-term maintenance, once daily is usually sufficient. If your nasal passages start feeling overly dry, scale back to every other day. There’s no strict maximum, but more than three times daily rarely adds benefit and can strip away the protective mucus layer your sinuses need.