You can’t get every last bit of snot out of your nose in one go, but you can clear enough to breathe freely using a combination of proper blowing technique, nasal rinsing, and hydration. Your nasal lining constantly produces mucus (about a quart a day even when you’re healthy), so the goal isn’t an empty nose. It’s keeping things thin and moving so congestion doesn’t build up.
Blow One Nostril at a Time
The most effective way to blow your nose is to press one nostril closed with a finger and gently exhale through the other, then switch. Blowing both nostrils at once builds pressure inside your nasal cavity and ear canals without actually moving much mucus out. Gentle, one-sided blows move air behind the blockage and push it forward.
Blowing too hard carries real risks. The nasal cavity connects to your ears through a small tube, and forceful blowing can push bacteria from your nose into that space, potentially causing an ear infection. If there’s a thick blockage near the front of your nose and you blow with enough force, the sudden pressure spike can even create a hole in your eardrum. Hard blowing also stresses the small blood vessels lining your nose, which can trigger nosebleeds, especially when those vessels are already dried out from congestion.
Use a Saline Rinse for a Deeper Clear
Nasal irrigation flushes out mucus that blowing can’t reach, particularly from the deeper sinus passages. A squeeze bottle or neti pot sends a stream of salt water in one nostril and out the other, physically washing away thick secretions, allergens, and irritants. It takes a little practice to get comfortable with the sensation, but it’s one of the most effective tools for stubborn congestion.
Water safety matters here. The CDC recommends using only distilled or sterile water (labeled as such on the bottle), or tap water that you’ve boiled at a rolling boil for one minute and then cooled. At elevations above 6,500 feet, boil for three minutes. Never use plain tap water straight from the faucet. In rare cases, untreated water can contain a dangerous amoeba called Naegleria fowleri that causes a severe brain infection. If you don’t have distilled water or the ability to boil, you can disinfect water with unscented household bleach: about 5 drops per quart for bleach with 4% to 5.9% sodium hypochlorite concentration.
Rinse once or twice daily when you’re congested. Many people find that rinsing before bed and in the morning keeps things clear enough to sleep and function normally.
Drink More Water to Thin the Mucus
Hydration directly changes how thick your nasal mucus is. A study at the University of Zurich measured the viscosity of nasal secretions before and after patients drank one liter of water over two hours. The mucus became roughly four times thinner, and about 85% of participants reported noticeably less congestion afterward. Thinner mucus drains on its own more easily and comes out with less effort when you blow.
Warm liquids like tea, broth, or plain hot water do double duty. The heat produces steam that moistens your nasal passages from the outside while the fluid hydrates you from the inside. There’s no magic number of glasses, but if your mucus feels thick and sticky, you’re likely not drinking enough.
Steam and Humidity Loosen Things Up
Breathing in warm, moist air softens dried mucus clinging to nasal tissue and helps your cilia (the tiny hair-like structures that sweep mucus toward the exits) work more efficiently. A hot shower with the bathroom door closed is the simplest approach. You can also hold your face over a bowl of hot water with a towel draped over your head, breathing through your nose for five to ten minutes.
Indoor humidity plays a bigger role than most people realize. When room humidity drops below 30%, your mucous membranes dry out, become irritated, and produce thicker secretions that are harder to clear. Keeping indoor humidity between 30% and 50% supports normal sinus function. A simple hygrometer (available for a few dollars) tells you where your home sits, and a cool-mist humidifier can bring dry rooms into range, especially in winter.
Decongestant Sprays: Effective but Short-Term Only
Over-the-counter nasal decongestant sprays work fast, shrinking swollen nasal tissue within minutes so trapped mucus can drain. But they come with a strict time limit. After about three days of use, these sprays can cause rebound congestion, a condition where your nasal passages swell up worse than before, creating a cycle where you feel like you need the spray just to breathe normally. This is called rhinitis medicamentosa, and it can take weeks to resolve once it sets in. Use sprays for short-term relief during the worst of a cold, not as a daily habit.
Oral decongestants (pills) don’t carry the same rebound risk and can reduce swelling enough to let mucus drain. They work differently from expectorants, which are designed mainly to thin mucus in the chest and lungs rather than the nasal passages.
Clearing a Baby’s Nose
Infants can’t blow their own noses, so you need to do it for them. The two main options are bulb syringes and tube-style nasal aspirators (like the NoseFrida). Both work by creating gentle suction at the nostril opening. A drop or two of saline in each nostril first loosens the mucus, making suctioning more productive.
In a clinical trial comparing a tube-style aspirator to a hospital-grade suction device in children with bronchiolitis, outcomes were similar, including hospital stay length and the need for deeper suctioning. Parents reported being generally satisfied with the tube-style aspirator. Either device can occasionally cause minor nasal bleeding, so use light suction and don’t insert tips deep into the nostril. The American Academy of Pediatrics supports suctioning the nostrils for temporary relief but advises against deep suctioning of the throat or airway, which can cause irritation and swelling.
What the Color of Your Mucus Does (and Doesn’t) Tell You
It’s tempting to read your snot like a diagnostic chart: clear means fine, yellow means infection, green means antibiotics. But this isn’t reliable. Harvard Health has noted that mucus color cannot distinguish a viral from a bacterial sinus infection, or even confirm whether an infection is present at all. Seasonal allergies alone can produce thick, yellow, or green discharge without any infection involved.
During a typical cold, mucus often starts clear, turns white or yellow as your immune system ramps up, shifts to green as dead white blood cells accumulate, and then gradually clears again. This color progression is normal and doesn’t mean a bacterial infection has taken hold.
What does warrant attention is duration and severity. Sinus symptoms lasting more than 10 days without improvement, repeated sinus infections that don’t respond to treatment, fever, or swelling and redness around the eyes all point toward something that needs professional evaluation.