Your nose filters more than ever, and a simple rinse might help it keep up.
Brushing our teeth and showering are daily habits most of us rely on to feel clean and refreshed. But as Dr. Anthony Brissett, a facial plastic surgeon at Houston Methodist, sees it, there’s one part of the body that does a lot of dirty work but rarely gets the same attention.
“When was the last time you showered your nose? Your nose filters the crud of the world, but we don’t really think about cleaning it.”
Dr. Anthony Brissett, facial plastic surgeon
It may sound odd at first, but from an ENT’s perspective, saline nasal rinses aren’t just useful for when you have a cold or congestion. They’re a simple way to care for your body’s air filter — a habit that, according to Dr. Brissett, may be worth doing more regularly.
Why ENTs often recommend routine nasal rinses even when you’re not sick
“The nose is the filter of the environment,” Dr. Brissett says.
Its job is to warm, clean and humidify the air before it reaches the lungs. But increasingly, the nose is being asked to handle more than it used to.
If it feels like allergy season has been getting harder to manage year after year, you’re not imagining it. A large observational study published in 2021 in Proceedings of the National Academy of Sciences (frequently cited by the CDC) found that pollen seasons across North America have grown roughly three weeks longer since 1990, increasing how long people are exposed to airborne allergens each year.
But pollen isn’t the only factor at play. Dr. Brissett also points to the growing role of irritants.
“We can talk about allergies and allergens, but we can also talk about irritants — and there’s a difference,” he says. “Irritants like pollution and other environmental exposures can create irritation, congestion and nasal mucus. And we’re seeing increases in both.”
A review published in Annals of Allergy, Asthma & Immunology in 2024 reported that exposure to common air pollutants is associated with more frequent and more severe symptoms of allergic rhinitis, including persistent congestion and nasal inflammation.
Public‑health agencies have echoed those concerns. According to the World Health Organization, air pollution and climate change can intensify the effects of allergens like pollen, worsening inflammatory nasal symptoms and prolonging exposure. The CDC similarly reports that longer pollen seasons and poorer air quality are making allergy symptoms harder to manage for many people.
Taken together, longer pollen seasons and more day‑to‑day exposure to irritants help explain why ENTs like Dr. Brissett don’t think of nasal rinses as just a sick‑day fix. As our noses are being asked to filter more, more often, rinsing becomes less about reacting to symptoms and more about helping the nose keep up with the work it’s already doing.
(Related: 7 Signs to See a Doctor for Sinus Infection Symptoms)
What saline nasal rinses actually do — and what they don’t
At a basic level, saline nasal rinses work mechanically. They physically wash away what’s sitting in your nasal passages, whether that’s excess mucus, allergens or environmental debris — while also helping keep the nasal lining moist.
“Nasal rinsing allows you to thin the mucus, helps with nasal drainage and helps moisturize the nose,” Dr. Brissett says. “It’s really a way to rinse the nose and keep it healthy and physiologic.”
That’s different from sprays or pills, which are designed to calm inflammation but don’t remove what’s already there. That distinction is also why ENTs often recommend rinsing before other nasal treatments. Clearing the nasal passages first can make sprays more effective, since medication is more likely to reach the tissue it’s meant to treat.
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“In some scenarios, adding medicine along with saline can amplify the outcome and increase the effectiveness,” Dr. Brissett says. “If you’re doing irrigations along with nasal steroids or any other nasal medicines, do the irrigations first. Wait 10 or 15 minutes and then deliver your nasal medicines.”
There are limits, though. Dr. Brissett notes that saline rinses don’t resolve symptoms caused by structural issues within the nose itself.
“If you have structural abnormalities within the nose — septal deformities, turbinate hypertrophy, nasal polyps — those are not going to be helped by saline rinses,” he says.
(Related: What Are the Signs of Chronic Sinusitis?)
Are nasal rinses actually safe to use regularly?
For many people, the idea of rinsing their nose more often raises a basic question: Is it actually safe to do this regularly, especially if you’re not actively sick?
From Dr. Brissett’s perspective, saline nasal rinses have a strong safety profile — albeit when they’re used correctly.
“There are very little risks associated with using saline irrigations as long as you’re using distilled or sterile water or boiled water and you’re not overdoing it,” he says.
Water quality, he stresses, is one of the most important parts of using nasal rinses safely. And if you’re using boiled water, allow it to cool completely back down to room temperature before using. He also recommends washing rinse devices regularly — typically about once a week — with gentle soap and water.
That safety profile is also why Dr. Brissett doesn’t see nasal rinsing as something you need to reserve only for when symptoms are severe. In other words, you don’t have to be actively congested or sick to benefit from rinsing, particularly during allergy season or periods of higher exposure to irritants.
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In terms of frequency, he generally recommends keeping it simple. Once or twice a day is typically sufficient, even when symptoms are heavier, with less frequent use once things improve. If rinsing starts to feel irritating or uncomfortable, that’s usually a sign you don’t need to keep pushing it.
“When you get to a point where you’re seeing the benefit, you can titrate yourself back,” he says. “Try once a day, and if that’s enough, every other day.”
Used that way, nasal rinses can be part of routine care without irritating the nasal lining or disrupting its normal defenses.
Is one nasal rinsing device better than another?
With nasal rinses, you can spend very little — or surprisingly a lot. The options range from basic squeeze bottles to powered devices that cost $100 or more. However, from Dr. Brissett’s perspective, what matters most isn’t the price or the device itself, but whether you’ll actually use it consistently.
“The most effective device is the one you’re going to use, and the one you’re going to use consistently and effectively,” he says.
In other words, you don’t need a high‑pressure system or an expensive setup for rinsing to work (although you could absolutely buy one if you wanted). Simple devices can be just as effective as powered ones, as long as they’re used properly and kept clean.
He also emphasizes that rinsing doesn’t require force. Squeezing harder on the rinse bottle won’t get your nose any cleaner. The goal is to flush the nasal passages gently, he says.
Saline concentration matters, too. Dr. Brissett recommends sticking with a physiologic saline solution — roughly the same salt concentration the body is used to — since solutions that are too strong or too weak can be irritating or stinging. That’s why pre‑measured packets or standard saline mixes are often the easiest option for most people.
When nasal rinses aren’t enough
Nasal rinses can go a long way toward improving everyday nasal health, but they’re not designed to fix every problem, especially when symptoms don’t improve despite consistent use.
According to Dr. Brissett, one of the most important things to understand is timeframe. Rinsing isn’t an instant fix, and it often takes sustained use before people notice meaningful improvement.
In general, he advises giving saline rinses several weeks to work before deciding whether they’re helping. If symptoms persist beyond that — or if congestion, pressure or breathing issues don’t budge at all — it may be a sign that something else is going on. Structural issues inside the nose, for example, won’t respond to rinsing alone. And ongoing symptoms can also point to inflammation that needs a different kind of treatment or a closer evaluation.
“If you’ve been using saline rinses consistently and you’re not seeing improvement after about four weeks, that’s a good time to be evaluated by your PCP or ENT,” Dr. Brissett says. “Some conditions need a higher level of assessment to figure out what’s really driving the symptoms.”
