Using saline solution for your nose involves flushing lukewarm salt water through one nostril and letting it drain out the other, clearing out mucus, allergens, and irritants. The process takes about two minutes once you get the hang of it, and most people notice easier breathing immediately afterward. Here’s how to do it safely and effectively.
How Saline Rinses Work
When salt water flows through your nasal passages, it thins out thick mucus and helps your nose clear it faster. The salt draws water from swollen nasal tissue, which reduces congestion and opens your airway. The physical flow of liquid also washes away pollen, dust, bacteria, and other irritants sitting on the nasal lining.
Beyond simple rinsing, the pressure of the fluid moving across your nasal lining stimulates the tiny hair-like structures (cilia) that sweep mucus toward your throat. This means your nose continues to clear itself more efficiently even after you finish the rinse. Hypertonic saline, which has a higher salt concentration, also triggers the release of natural antimicrobial molecules, helping your body fight off infection.
Making Your Saline Solution
Mix half a teaspoon of non-iodized salt (such as sea salt or pickling salt) and half a teaspoon of baking soda into one cup (8 ounces) of lukewarm water. The baking soda acts as a buffer that prevents the solution from stinging. This creates an isotonic solution, meaning it matches the salt concentration of your body.
For a stronger, hypertonic solution (useful for more stubborn congestion or after sinus surgery), increase the salt to about one teaspoon per cup while keeping the baking soda the same. Research shows that concentrations between 3% and 5% salt improve mucus clearance more than isotonic rinses, with patients reporting greater symptom relief and faster healing of sinus tissue. Stay below 5% to avoid irritation.
Water Safety Is Critical
Never use plain tap water for nasal rinsing. Tap water can contain low levels of bacteria and amoebas that are harmless when swallowed (stomach acid kills them) but can cause serious, even fatal infections when introduced into the nasal passages. The CDC recommends using one of these:
- Boiled tap water: Bring water to a rolling boil for at least 1 minute (3 minutes if you live above 6,500 feet elevation), then let it cool to lukewarm.
- Distilled or sterile water: Available at any pharmacy.
- Filtered water: Passed through a filter specifically designed to trap infectious organisms. Standard pitcher filters are not sufficient.
Step-by-Step Rinsing Technique
You can use a neti pot, squeeze bottle, or bulb syringe. The steps are essentially the same regardless of device.
Stand or sit over a sink. Lean forward so you’re looking down into the basin. Tilt your head slightly to one side, about 45 degrees. Keep your forehead level with or slightly lower than your chin. This forward tilt is important because it prevents the solution from running down the back of your throat.
Place the tip of your device about half to three-quarters of an inch into your upper nostril. Breathe through your mouth (not your nose) for the entire rinse. Gently squeeze or pour the solution into your nostril using steady, even pressure. The liquid will flow through your nasal cavity and drain out the lower nostril into the sink. Use about half the solution in one side, then switch to the other nostril.
After finishing both sides, gently blow your nose to clear any remaining solution. Lean forward and turn your head side to side to help any trapped water drain out. Some people notice small amounts of saline trickling out for 15 to 20 minutes afterward, which is normal.
How Often to Rinse
For active congestion from a cold, allergies, or a sinus infection, rinsing twice a day is a common and effective routine. Some people rinse once in the morning and once before bed. For long-term maintenance with chronic sinus issues, once daily is typically sufficient. There’s no firm consensus on the “perfect” frequency, so adjust based on how your nose responds. If you notice dryness or irritation, cut back to once a day or every other day.
Using Saline Drops for Babies
Infants can’t blow their noses or tolerate a full rinse, so the approach is different. Place your baby on their back and put 2 drops of saline into one nostril using a clean dropper. Wait about one minute to let the saline thin the mucus.
Then squeeze the air out of a bulb syringe before placing the tip gently into the nostril, about a quarter to half an inch deep. Slowly release the bulb to suction out the loosened mucus. Never hold the other nostril closed while suctioning. Squeeze the contents into a tissue, then repeat on the other side. This works well before feedings or sleep, when congestion is most disruptive.
Cleaning Your Device
Rinse your neti pot, squeeze bottle, or bulb syringe with safe water (distilled, sterile, or previously boiled) after every use. Wash it with soap and water, then let it air dry completely before storing. A damp device sitting in a closed cabinet is an ideal breeding ground for bacteria and mold. The FDA specifically warns against reusing water or leaving solution sitting in the device between uses. If your plastic squeeze bottle develops visible residue or discoloration, replace it.
When to Skip Nasal Irrigation
Nasal rinsing isn’t appropriate in every situation. Avoid it if you have an active ear infection, pressure or fullness in one or both ears, a completely blocked nostril, or have recently had ear or sinus surgery (unless your surgeon specifically recommended it). If you experience burning or stinging during a rinse, reduce the amount of salt in your mixture and make sure the water temperature is comfortably lukewarm, not hot or cold.
If your symptoms aren’t improving after a week or two of regular rinsing, or if you develop a fever, worsening pain, or headaches, those are signs that something beyond simple congestion may be going on.
Isotonic vs. Hypertonic: Which to Choose
For everyday use, allergies, and mild congestion, isotonic saline (the standard half-teaspoon recipe) is gentle and effective. It rinses without irritating sensitive tissue, making it a good default for most people.
Hypertonic saline pulls more fluid from swollen tissue, so it’s more effective at reducing congestion and improving mucus clearance. Studies comparing the two after sinus surgery found that patients using 3% hypertonic saline had significantly better symptom scores and faster tissue healing than those using isotonic saline. The tradeoff is that higher salt concentrations are more likely to cause temporary stinging. If you’re new to nasal rinsing, start with isotonic and move to hypertonic if you need stronger relief.