Short version: a strip reliably increases airflow. It does not meaningfully increase blood oxygen saturation in a healthy person. Those are different measurements, and conflating them is how this category oversells itself.
Why your oxygen is already at the ceiling
A healthy adult at rest sits at roughly 95–100% oxygen saturation. That is essentially full.
Haemoglobin is already carrying nearly all the oxygen it can carry. Moving more air past it does not load more oxygen onto molecules that are already loaded — you cannot fill a full glass further.
So a device that opens your nasal airway does not raise a number that has no room to move. Any product implying it will raise your oxygen levels is describing something that is not physiologically available.
What actually changes
Nasal resistance drops. This is measurable, repeatable, and the honest claim. Studies of nasal dilation consistently show reduced resistance and increased peak nasal inspiratory flow.
Breathing gets easier, which is a real experience even without a number moving. Less effort per breath, less of the sensation of pulling air through a straw.
You are more likely to keep breathing through your nose, which is where the actual benefits live — humidification, filtration, nitric oxide, and the slower breathing pattern that nasal resistance naturally produces. (Titan's summary of that research, with the papers cited.)
Nitric oxide. Worth being careful here. The nose produces nitric oxide continuously, and inhaling it improves the efficiency of gas exchange in the lungs. That is a genuine and interesting mechanism. But the relevant comparison is nasal breathing versus mouth breathing — not strip versus no strip. If a strip keeps you nasal-breathing when you would otherwise have gone mouth, you get that benefit. The strip is not adding nitric oxide.
Where oxygen genuinely is the issue
Two cases where saturation is actually the problem, and in both a strip is the wrong tool.
Obstructive sleep apnea. The airway at the back of the throat collapses, airflow stops, and saturation genuinely falls — sometimes substantially, dozens or hundreds of times a night. That is a real desaturation problem, and a strip does not address it because the collapse is nowhere near the nose. (Why strips do not treat apnea.)
Lung or cardiac disease. A different category entirely, and a medical matter.
If you are worried about your overnight oxygen, the answer is a sleep study, not a strip. (How to decide.)
What about exercise?
The claim you see is that strips improve athletic performance by increasing oxygen delivery. The research does not support it.
Studies on nasal dilators and exercise consistently find reduced perceived exertion and better subjective breathing comfort, without reliable improvements in VO2 max, time to exhaustion, or performance outcomes.
That is not nothing — feeling like you can breathe more easily is worth something. It is just not more oxygen. (Strips and running, in full.)
The honest case for a strip
Narrow, and it holds up well.
If your nasal valve collapses on inhalation — the soft section about a centimetre inside the nostril drawing inward as you breathe in — a strip mechanically opens it. You feel the difference within seconds. That means less effort, less mouth breathing, and usually less snoring.
TitanAir strips use spring-loaded bands to produce that lift, since the lift is the mechanism rather than the adhesive. (The ten-second test for whether that is your restriction.)
That is the claim worth making, and Titan makes it as a comfort and recovery product rather than a medical one.
The bottom line
Airflow up, effort down, nasal breathing more likely. Blood oxygen unchanged, because it was already near maximum.
If your overnight oxygen is genuinely dropping, that is apnea or a medical problem, and it needs a sleep study rather than an adhesive strip.