A nasal rinse flushes saline solution through one nostril and out the other, washing away mucus, allergens, and irritants. The whole process takes about two minutes once you have your supplies ready. Getting the technique right matters, though, because the wrong water source or salt ratio can cause stinging, ear pressure, or in rare cases, serious infection.
What You Need Before You Start
You’ll need a rinsing device, safe water, and a salt mixture. For the device, the most common options are a neti pot (a small spouted container you pour from), a squeeze bottle, or a bulb syringe. Squeeze bottles give you more control over pressure and are easier for beginners.
For the water, this is the single most important safety point: never use plain tap water. Tap water can contain low levels of organisms that are harmless if swallowed but dangerous when introduced directly into your nasal passages. The FDA recommends using only distilled water, sterile water (both sold at pharmacies and grocery stores), or tap water that has been boiled for 3 to 5 minutes and cooled to lukewarm. If you boil water ahead of time, store it in a clean, closed container and use it within 24 hours. Water passed through a filter rated at 0.2 microns or smaller also works.
How to Make the Saline Solution
The American Academy of Allergy, Asthma and Immunology recommends this recipe: mix 3 teaspoons of non-iodized salt (pickling salt or canning salt) with 1 teaspoon of baking soda. Store this dry mixture in a small airtight container. When you’re ready to rinse, add 1 teaspoon of the mixture to 8 ounces (1 cup) of lukewarm safe water and stir until dissolved.
The baking soda acts as a buffer, making the solution gentler on your nasal lining. This recipe produces an isotonic solution, meaning it matches your body’s natural salt concentration of about 0.9%. That’s the most comfortable option for routine use. Pre-made saline packets are also widely available if you prefer not to measure.
Getting the Temperature Right
Aim for lukewarm, between 105 and 110°F (roughly 40 to 43°C). A simple test: pour a small amount over the inside of your wrist, the way you’d check a baby’s bottle. It should feel comfortably warm, not hot. Cold solution won’t harm you, but it can cause an unpleasant sensation of dizziness or discomfort. Hot solution can burn the delicate tissue inside your nose.
Step-by-Step Rinsing Technique
Stand over a sink or in the shower. Lean forward so you’re looking down at the basin, then tilt your head slightly to one side, about 45 degrees. Keep your chin tucked toward your chest rather than tipping your head back. This angle lets gravity pull the solution through your nasal passages and out the opposite nostril instead of down your throat.
Breathe through your mouth the entire time. This is key. Mouth breathing keeps your soft palate closed, which prevents the solution from draining into your throat and reduces the chance of it reaching your ears. Place the tip of the neti pot or squeeze bottle snugly against your upper nostril, forming a loose seal. If you’re using a squeeze bottle, gently squeeze. If you’re using a neti pot, simply tilt to pour. Use about half the solution (4 ounces) per side.
The saline will flow through your nasal cavity and drain out the lower nostril. Some may trickle out of your mouth, which is normal. When you’ve finished one side, gently blow your nose to clear remaining fluid, then repeat on the other side. After both sides are done, blow your nose a few more times with your mouth open to clear residual water. Avoid pinching both nostrils shut while blowing, as this can push fluid toward your ears.
How Often to Rinse
For seasonal allergies or a cold, once or twice daily while you have symptoms is a reasonable starting point. Many people with chronic sinus congestion rinse once daily as part of their routine. If your symptoms improve, you can scale back to a few times a week for maintenance. There’s no strict upper limit established in guidelines, but most providers suggest once or twice daily as a sustainable habit.
Saline rinsing works by thinning mucus and physically flushing it out, which helps the tiny hair-like structures lining your nasal passages (cilia) do their job more effectively. The gentle pressure from rinsing also stimulates your nasal lining to release its own natural antimicrobial molecules and to move fluid more efficiently. Over time, regular rinsing can reduce the overall inflammatory load in your sinuses.
Troubleshooting Common Problems
Stinging or burning is the most common complaint, and it almost always means the salt ratio is off. Too much salt, too little salt, or no salt at all can irritate nasal tissue. Plain water actually stings more than properly mixed saline because the concentration difference pulls water into your cells. If you’re following the recipe and still experiencing discomfort, try reducing the salt slightly. Also double-check that your water has cooled enough.
If the solution won’t flow through, your nasal passages may be too swollen. Try using a decongestant spray about 10 minutes before rinsing, or take a hot shower first to open things up. Don’t force the solution by squeezing harder, as excess pressure can push fluid into the tubes connecting your nose to your ears.
Ear fullness or pressure during rinsing means fluid is reaching your eustachian tubes. Stop, blow your nose gently, and next time use less pressure and make sure you’re leaning far enough forward. You should avoid nasal rinsing altogether if you currently have an ear infection or pressure in one or both ears.
Water draining from your nose 30 minutes to an hour later is normal and harmless. It’s just residual solution that pooled in a sinus cavity. Tilting your head side to side or gently bouncing on your heels after rinsing can help clear it sooner.
Cleaning and Replacing Your Device
After each use, rinse the bottle, cap, and any internal tubing with safe water (the same kind you’d use for the rinse itself, not tap water). Add a few drops of dish soap or baby shampoo, shake well, and squeeze hard to push soapy water through any tubing. Rinse all soap away thoroughly and set the pieces on a clean paper towel to air dry. Don’t put squeeze bottles in the dishwasher, as the interior won’t get adequately cleaned.
For extra disinfection, you can microwave the disassembled bottle, cap, and tubing for 40 seconds. Make sure the microwave interior is at room temperature before doing this. Replace your squeeze bottle every 3 months, or sooner if you notice discoloration or cracks. Neti pots made of ceramic or stainless steel last longer but still need the same wash-and-dry routine after every use.
Who Should Skip Nasal Rinsing
Nasal rinsing is safe for most adults and children old enough to cooperate with the process. However, you should avoid it if you have an active ear infection, pressure in your ears, or unhealed facial trauma (such as a recent fracture or surgery involving the nose or sinuses), since fluid could travel into healing tissue. People with significant hand tremors or muscle control issues that make it hard to manage the device safely should also use caution, as accidentally inhaling the solution can cause coughing or choking.