CPAP Mask Types: Finding the One You'll Actually Keep Using

Receiving a sleep apnea diagnosis is often a moment of relief. You finally understand what’s causing your daytime sleepiness and the multiple wake-ups each night. For many, the next step is to start CPAP therapy. But CPAP therapy also comes with a few crucial decisions, including choosing from the different CPAP mask types.

The mask may seem like a minor part of the therapy, but it plays an important role in how easy it is to stick with treatment and the therapy’s effectiveness. While there are two clear front-runner masks in clinical trials (nasal pillows and nasal masks), there are cases where a full-face or hybrid mask makes more sense. Plus, determining if a nasal pillow or mask is right for you is yet another decision. Ahead, we’ll detail everything you need to know about choosing a CPAP mask.

What are the main types of CPAP masks?

Nasal pillows (fit inside the nostrils), nasal masks (fit over the nose), and full-face masks (fit over the mouth, nose, and up to the forehead) are the three main CPAP mask types, says Daniel Slaughter, MD, a sinus, snoring, and sleep medicine specialist. There are also hybrid or specialized masks, which we’ll get into below.

Nasal pillow masks

For the majority of people, the nasal pillow is the optimal choice, says Dr. Slaughter. It delivers the pressurized air through the nostrils. That air travels to the throat, where it acts as a "pneumatic splint" that holds the upper airway open during sleep. Because a nasal pillow seals at the nostrils, it has a small contact area and tends to have fewer seal-related leaks.

A 2022 meta-analysis in the Journal of Sleep Research backs up the effectiveness of the nasal pillow, especially when compared to a full-face mask. The review points out that nasal pillows are particularly effective for those who require a lower to normal CPAP pressure setting.

Nasal pillow masks at a glance:

• What part of the face they cover: It goes inside the nostril, so it only covers a small part of the face under the nose.

• Who they're best for: People who breathe through their nose and don’t need a higher CPAP pressure setting

• Drawbacks or limitations: The same meta-analysis states that nasal pillows have a slightly lower adherence rate than nasal masks (and a higher adherence rate than oronasal masks, which fit over the entire face). That suggests some people may not like the feel of the nasal pillow, resulting in less consistent use.

Nasal masks

Nasal masks are equally effective as nasal pillows, though they may have a slightly better adherence rate, per the research in the Journal of Sleep Research. Higher adherence suggests that for some, nasal masks are more comfortable or easier to use than nasal pillows. 

However, because these masks cover the bridge of the nose, it may not be as suitable as a pillow for those with claustrophobia or facial hair. Some nasal masks may also lead to sores on the nose.

Nasal masks at a glance:

• What part of the face they cover: Nose and nose bridge

• Who they're best for: People who breathe through their nose and either need a higher CPAP pressure setting or find a nasal pillow uncomfortable 

• Drawbacks or limitations: Like a nasal pillow, nasal masks may not be suitable for mouth breathers or those who regularly experience a stuffy nose. People with facial hair or who feel claustrophobic with a larger mask on their face may also prefer the nose pillow.

Full-face masks

While a full-face mask (aka oronasal mask) isn’t as effective, it may be the most practical CPAP mask for mouth breathers and those with chronic congestion or allergies that can make nasal options harder to use. However, the full-face mask is associated with more mask leaks and apneas (small pauses in breathing).

A key aspect of CPAP therapy is that it delivers continuous pressure to prevent the airway from collapsing, in order to decrease apnea. The CPAP mask should deliver that air to where someone is breathing in and out at night, which, for some people, is the mouth, not the nose. 

While mouth breathing is common with obstructive sleep apnea, per a study in Biomedical Journal, it doesn’t automatically mean you need a full-face mask. Experts usually suggest starting with a nasal mask or nasal pillows, even if you breathe through your mouth. Nasal masks work at lower pressures, and people are more likely to stick with them. 

Full-face masks at a glance:

• What part of the face they cover: Mouth, nose, nose bridge, and part of the forehead

• Who they're best for: Mouth breathers, people with chronic congestion and allergies, or others who cannot use a nose pillow or mask

• Drawbacks or limitations: This mask type may lead to more CPAP mask leaks, which can negatively impact the effectiveness of CPAP therapy (though mouth leaks can often be managed with a chin strap).

Hybrid and specialized options

If someone tries all three of the main mask types without success, a sleep specialist may recommend a hybrid or specialized option. This category is still developing, and researchers are currently experimenting with different hybrid mask types. 

At the University of Cincinnati, for example, researchers are testing a hybrid mask that covers the nose and mouth but doesn’t lead to as many air leaks. This mask and others like it are not currently FDA-approved or -cleared (aka they’re not yet available to the public). That said, they may offer additional options in the future. 

Hybrid masks at a glance:

• What part of the face they cover: Depends on the mask, but usually the mouth and under the nose. Most do not cover the forehead or nose bridge.

• Who they're best for: Those who cannot consistently and comfortably use another CPAP mask type.

• Drawbacks or limitations: Many of these are still experimental, meaning they may not yet be publicly available, and there’s less clinical data on their effectiveness. 

Why does your mask choice affect whether CPAP works?

Your mask choice affects whether CPAP works for two main reasons. The first is fairly objective: Nasal masks and pillows lead to less air leakages, while full-face masks aren’t as effective at stopping apneas. A 2022 paper in the Brazilian Journal of Otorhinolaryngology found that study participants with sleep apnea who used a nasal mask or nasal pillow experienced:

• Lower number of breathing pauses or shallow breathing events when asleep

• Better sleep efficiency

• Less time awake when a breathing pause did occur

This study was a direct comparison between nasal and full-face masks. Its findings are also backed up in other meta-reviews and clinical trials, and Dr. Slaughter usually recommends nasal pillows in his practice.

However, effectiveness in clinical trials doesn’t always translate to the real world. And that leads us to the second reason masks impact CPAP effectiveness: adherence. In other words, if you don’t find your mask comfortable, you probably won’t use it often.

For some people, such as those who breathe through their mouth or have allergies, a nasal mask or pillow may not be viable. Similarly, some may find that a full-face or nasal mask feels claustrophobic or irritates their moustache. Comfort is highly subjective, yet worth considering alongside objective effectiveness.

How to choose the right CPAP mask for you

When choosing a CPAP mask, there are a lot of factors to consider. These include your sleeping position, if you breathe from your nose or mouth, the recommended pressure setting for your CPAP machine, as well as if you have facial hair or suffer from allergies or chronic congestion.

Consider your preferred sleep position

If you sleep like a log on your back, the majority of CPAP mask types may work for you. For the rest of us, the design may impact adherence. A CPAP mask for side sleepers or restless sleepers should be low-profile and secure, such as a nasal pillow, so that it doesn’t move when you do. 

Stomach sleepers may need to switch to sleeping on their side or back, as all mask types are not compatible with stomach sleeping, per an article in the Canadian Respiratory Journal.

Figure out whether you breathe through your nose or mouth while sleeping

Those who sleep with their mouths open often require a mask that delivers pressure to the mouth and nose (aka full-face masks and some hybrid masks). People who breathe through their nose are able to use a nasal mask or pillow.

If you’re using a full-face mask because you struggle with breathing through your nose, you may also want to see an ENT doctor. “If you are having a hard time getting a nasal mask to work,” explains Dr. Slaughter, “it's usually a nasal issue, so seeing an ENT could help.”

Know your pressure setting

Nasal masks and pillows deliver lower pressure levels. As such, they may not be appropriate for people who need a higher pressure setting. If you’re unsure what pressure is appropriate, ask a sleep medicine specialist. 

Consider facial hair

People with facial hair may want to opt for a nasal pillow. Other mask types may irritate or tickle facial hair, but a nasal pillow won’t since the bulk of the “mask” sits within the nostrils. 

Think about claustrophobia

People who feel claustrophobic or closed-in when wearing a mask may prefer a nasal pillow, since it leaves the space around the nose and mouth open. For mouth breathers and others who require a full-faced mask, hybrid options that don’t reach up to the forehead or bridge or nose may not feel as closed-in. 

Consider nasal congestion and allergies

Allergies or nasal congestion can also make it hard to use a nasal mask or pillow, says Dr. Slaughter. While this could be a sign to use a full-face or hybrid mask in the short term, Dr. Slaughter urges readers with this issue to also see an ear, nose, and throat (ENT) doctor. Working with an ENT may help reduce the congestion, allowing someone to potentially use a nasal mask or pillow in the future.

How do you know if your CPAP mask isn't the right fit?

If a CPAP mask isn’t the right fit, you might find yourself procrastinating on falling asleep or “forgetting” to use the mask more often. However, it can be hard to differentiate this from actual forgetfulness or other reasons you may struggle to fall asleep. Fortunately, there are some signs that the mask may be causing your bedtime procrastination or CPAP forgetfulness.

Signs your CPAP mask isn’t the right fit

Your current CPAP mask may not be the right fit if you’re experiencing: 

• Congestion

• Runny nose

• Nosebleeds

• Dry mouth 

• Irritation around the mask that makes it difficult to sleep

When helping a patient determine if CPAP is working, Dr. Slaughter also looks at compliance data. These stats reveal if there are any leaks, how often a patient is using the device, and more.

What to do about a poor fit

If you think your CPAP mask isn’t fitting right, you don’t have to put up with it. Instead, follow these four steps steps to troubleshoot your mask problems:

1. Try adjusting the fit and headgear: This is an easy, affordable way to see if your current mask will work for you. Refitting the mask may involve some trial and error, but you can reduce the amount of time by working with a sleep medicine specialist on the adjustments. 

2. See if you can purchase any smaller accessories to make it more comfortable: A sleep medicine specialist may be able to advise if there are accessories you can buy to make your current mask work for you. 

3. Try a different mask type: About 19% of CPAP users switch their mask type in the first year. Ideally this happens under the guidance of a healthcare provider.

4. Consider CPAP alternatives: A 2022 meta-review in Cureus reinforces that CPAP therapy is the gold standard for sleep apnea treatment, but that doesn’t mean it’s the only option. Oral appliance therapy, such as wearing a prescription mouth guard, works for some people. 

5. Turn to a healthcare provider: If you're struggling with poor fit and these steps aren't helping, make a virtual appointment with a Dreem Health clinician to help you troubleshoot further.

The bottom line

The appropriate CPAP mask fit is a key ingredient to consistent, comfortable treatment. For many people, the most suitable mask type is a nasal mask or nasal pillow, though there are exceptions. Working with a sleep medicine specialist, such as the team at Dreem Health, is a great way to determine if you fall into the nasal majority or need another mask type. 

Frequently asked questions (FAQs) 

What type of CPAP mask is most effective?

There isn’t a single “most effective” mask for everyone. The appropriate choice depends on sleeping position, how you breathe while sleeping, and if you have any sinus-related health concerns. 

Which CPAP mask is least likely to leak?

Nasal pillow masks are the least likely to leak since they sit directly in the nose. Nasal pillows also have minimal facial contact and are easy to seal.

What is the 4-hour CPAP rule?

The 4-hour CPAP rule refers to a decades-old belief that for CPAP therapy to be effective, someone must use the device for at least four hours a night, per a 2025 article in Thorax. In fact, using CPAP for at least four hours a night 70% is the CPAP adherence standard used by Medicare and many other insurance providers.