A nasal rinse flushes saline solution through one nostril and out the other, clearing mucus, allergens, and irritants from your nasal passages. The technique takes about two minutes once you get the hang of it, and it’s one of the simplest ways to relieve sinus congestion, allergy symptoms, or post-nasal drip. Here’s how to do it safely and effectively.
What You Need
You’ll need a rinsing device and a saline solution. The most common devices are squeeze bottles (like NeilMed Sinus Rinse) and neti pots, which look like small teapots. Squeeze bottles give you more control over water pressure, while neti pots rely on gravity. Either works well.
For the solution, you can buy premixed saline packets or make your own. To mix your own, combine 8 ounces of warm water with 1/2 teaspoon of non-iodized salt (such as sea salt or pickling salt) and 1/2 teaspoon of baking soda. The baking soda buffers the solution so it doesn’t sting. Stir until both dissolve completely. The water should feel comfortably warm, not hot.
Water Safety Is Critical
Never use plain tap water for a nasal rinse. Tap water can contain low levels of bacteria and, in rare cases, organisms like Naegleria fowleri, an amoeba that can cause a fatal brain infection when introduced through the nose. The CDC recommends using only store-bought distilled or sterilized water, or tap water that has been boiled at a rolling boil for at least 1 minute and then cooled. If you live at an elevation above 6,500 feet, boil for 3 minutes. This is the single most important safety rule for nasal rinsing.
Step-by-Step Technique
Stand over a sink or in the shower. Lean forward so your face is looking down into the basin. Tilt your head sideways about 45 degrees so one nostril points toward the ceiling and the other points toward the drain. Keep your chin slightly tucked so the water doesn’t run down the back of your throat.
Breathe through your mouth during the entire rinse. Place the tip of the squeeze bottle or neti pot snugly against your upper nostril (the one closer to the ceiling). If you’re using a squeeze bottle, gently squeeze. If you’re using a neti pot, tip it so water flows in by gravity. The solution will travel through your nasal cavity and drain out the lower nostril. Use about half the solution on one side.
When you’ve finished one side, gently blow your nose to clear remaining fluid, then tilt your head to the other side and repeat with the rest of the solution. After both sides are done, blow your nose gently a few more times to remove lingering water. Avoid blowing forcefully, as that can push fluid into your ear canals through the passages that connect your nose to your middle ear.
If Water Reaches Your Throat
This usually means your head isn’t tilted far enough forward. Adjust so your forehead is lower than your chin relative to the sink. If water consistently goes down your throat or into your ears, try reducing the pressure on your squeeze bottle or repositioning your head angle. A little trial and error in the first few sessions is normal.
Isotonic vs. Hypertonic Solutions
The recipe above produces an isotonic solution, meaning it matches the salt concentration of your body’s own fluids. This is the gentlest option and works well for routine rinsing. A hypertonic solution has a higher salt concentration, typically made by using a full teaspoon of salt instead of half a teaspoon in the same amount of water.
A meta-analysis comparing the two found that hypertonic saline produced greater symptom improvement for sinus conditions. However, hypertonic solutions also caused more minor side effects like burning, stinging, and nasal irritation. No major adverse effects were reported with either type. If you’re new to nasal rinsing, start with isotonic. You can try hypertonic later if you need stronger relief, especially during active sinus infections or heavy congestion.
How It Works Inside Your Nose
Your nasal passages are lined with tiny hair-like structures called cilia that sweep mucus toward your throat in a coordinated wave. When you’re congested or dealing with allergies, the mucus layer thickens and the cilia can’t move it efficiently. Saline rinsing works on multiple levels: it physically washes away thickened mucus and trapped particles, it decreases mucus thickness so your cilia can do their job again, and the flow of water itself stimulates cellular pathways that boost mucus clearance. Hypertonic solutions add an extra mechanism by drawing water out of swollen nasal tissue through osmosis, which helps rehydrate the mucus layer and reduce swelling.
How Often to Rinse
When you’re actively congested from a cold, sinus infection, or allergy flare, rinsing once or twice daily is safe and effective. Some people rinse daily or a few times a week even without symptoms as a preventive measure against sinus infections or seasonal allergies. As long as you use safe water and keep your equipment clean, daily rinsing is fine for extended periods.
Keeping Your Equipment Clean
After every use, rinse your squeeze bottle or neti pot thoroughly with safe water (distilled or previously boiled). Shake out the excess and leave it open to air dry completely. Bacteria and mold thrive in damp, enclosed environments, so never seal the device while it’s still wet. Wash the bottle with warm soapy water every few days, and replace squeeze bottles every three months or so, since the plastic interior can develop biofilm that’s hard to remove. Ceramic and stainless steel neti pots last longer with proper care but should be inspected regularly for cracks or residue buildup.
Nasal Rinsing for Children
Nasal rinsing is safe even for very young children, though the method changes with age. For infants and toddlers, saline nose drops or a bulb syringe work best. You apply a few drops of saline into each nostril, wait a moment, then use the bulb syringe to gently suction out loosened mucus. Clinical trials have studied saline irrigation in children as young as 9 months with upper respiratory infections. Older children who can cooperate with instructions can use a squeeze bottle or neti pot, with a parent guiding head positioning. Use a smaller volume of solution (4 ounces instead of 8) for smaller nasal passages.
When to Skip the Rinse
Avoid nasal rinsing if you have a severe nosebleed that hasn’t stopped, if one side of your nose is completely blocked to the point that no air or fluid passes through, or if you’ve had recent nasal or ear surgery (unless your surgeon specifically recommends it). Fluid that can’t drain freely from the nasal cavity may be pushed into the middle ear or sinuses and cause discomfort or infection. If rinsing consistently causes ear pain, pressure, or dizziness, stop and reassess your technique before trying again.