Snorkel masks with a beard or mustache: getting a seal

By SnorkelMatch, last checked October 9, 2026. How we check

A mask seals because soft silicone rests on smooth skin. Hair holds it off the skin and leaves tiny channels for water. That does not rule snorkeling out with a beard or mustache; it changes which mask type to choose and what to test before you go.

Open the mask quiz

Fig. 1Left: the skirt lies flat on skin. Right: hairs hold it off the skin and leave channels for water.

Why facial hair lets water in

The silicone skirt of a mask is soft so it can follow the shape of your face. On bare skin it closes every gap. Each hair under it props the edge up a fraction, and a row of hairs makes a path water can follow. The Divers Alert Network notes that “it is not unusual for a small amount of leakage to occur while diving, especially if you have facial hair”^[1]. One maker’s FAQ lists beards next to hair and a poor fit as causes of leakage through the facial seal^[2].

A few drops are manageable. A steady trickle is not, and Hawaii’s ocean safety page lists a poor fit that lets water leak in among the concerns studied for snorkeling drownings^[4].

Where each mask type seals

Traditional mask

Seals on the forehead, the cheeks and across the upper lip, under the nose. A beard below the mouth is outside the seal; the part that matters is the hair right under the nose.

Full-face mask

Seals on the forehead, down the cheeks, along the jaw and under the chin. A mustache sits inside it, but a beard crosses the seal along its whole lower half.

That gives a rough rule. With a mustache only, a full-face mask moves the seal away from the hair. With a beard, a traditional mask keeps most of the hair outside the seal, and only the strip under the nose is in the way. Decathlon’s check for its full-face masks, that there should be no space between the skirt and your chin^[5], is hard to pass through a full beard.

What you can do

Trim only where the skirt sits

You do not need to shave everything. For a traditional mask, the hair that crosses the seal is the part of the mustache just under the nose and at the corners of the upper lip. Trimming that strip short, or shaving a narrow band where the skirt rests, takes the hair out of the seal without losing the rest. Short stubble still holds the skirt off the skin, so test again after trimming.

Choose a skirt that sits on the least hair

Masks differ in how low the skirt runs under the nose. Hold a few on in a shop and look in a mirror: the one whose lower edge rests on skin above the mustache line is the one to test properly.

Be careful with greases and creams

Petroleum jelly on a mustache is a common tip. Check with your mask’s maker first: U.S. Divers’ care page says “Do not use any type of alcohol, solvent or petroleum based substances to clean or lubricate any part”^[3], because they can damage the materials. Whatever you use, keep it off the lens.

Learn to clear a little water

With a traditional mask some water is easy to clear. DAN describes it: breathe out through your nose and tilt your face toward the surface while lifting the lower edge of the mask slightly^[1]. U.S. Divers describes a version for masks with a purge valve: hold the mask firmly and breathe out sharply through the nose^[3]. Practice standing in shallow water first.

Test before the trip

Do the seal test at home, with the facial hair as it will be on the trip.
Then test in shallow water where you can stand, for a few minutes, face down, breathing slowly.
If water keeps coming in, try the other mask type or trim the strip that crosses the seal, then test again.
Keep the packaging until a mask passes, and check the seller’s return policy.

Not sure which type to start with? The mask quiz asks about facial hair along with glasses, swimming and the mouthpiece, and explains its answer.

Questions people ask

Can you snorkel with a beard?

Yes. Expect some water to seep in: DAN notes that a small amount of leakage is not unusual, especially with facial hair. Learning to clear a little water and choosing a mask whose seal sits on the least hair both help.

Is a full-face mask better for a beard?

Usually not for a full beard: a full-face mask seals around the jaw and under the chin, right across it. For a mustache alone it can be the other way round, because the mustache sits inside a full-face mask but under the seal of a traditional one.

Should I put petroleum jelly on my mustache?

It is often suggested, but U.S. Divers' care page says not to use any petroleum-based substance to clean or lubricate any part of its masks, because it can damage the materials. Ask the maker of your mask what it allows before putting anything on the skirt.

How do I get water out of a traditional mask?

DAN describes the technique: breathe out through your nose and tilt your face toward the surface while lifting the lower edge of the mask slightly. Practice it standing in shallow water.

Sources

[1]
Divers Alert Network (DAN): Mask Squeeze (Facial Barotrauma)
"You should be able to achieve an appropriate seal by gently placing the mask on your face and inhaling through your nose. The mask should seal to your face and not fall off even without the mask strap in place. It is not unusual for a small amount of leakage to occur while diving, especially if you have facial hair." Equalizing a mask means "adding air to the space in the mask (by exhaling through your nose)". Read on 2026-10-09.
[2]
Ocean Reef (manufacturer): Aria snorkeling mask FAQ
Leakage "from the facial seal (due to beard, hair or a not correct fit)" drains through the valve; the product "has not been made for free diving"; the optical lens support "allows to use optical lenses (lenses not included) with the mask". Read on 2026-10-09.
[3]
U.S. Divers (manufacturer): Care & Maintenance: Masks
"During the manufacturing process, a thin film of silicone will develop on the glass lens. This film of silicone will cause rapid fogging"; scrub the lens "with a mild abrasive. A paste toothpaste is ideal"; "Mask fogging is a normal occurrence, even after the film of silicone has been removed."; "Some after after-market anti-fog agents contain formaldehyde, alcohol, or other substances that may damage the plastic materials"; a mask "cinched too tightly" can lift at the sides; "Do not use any type of alcohol, solvent or petroleum based substances to clean or lubricate any part."; after snorkeling, soak "in warm fresh water (not over 120°F)" and store "in a cool, dry and protected place away from high heat or direct sunlight." Read on 2026-10-09.
[4]
Hawaii Department of Health, Hawaii Ocean Safety: Snorkeling Safety
"Always snorkel with a buddy"; "Use an anti-fog product in your mask"; "Make sure your face mask fits properly and does not leak"; "Consider using a floatation device appropriate for snorkeling, such as a floating vest or belt"; "If you become dizzy, disoriented, or begin to feel a headache, you may be experiencing carbon dioxide buildup in your snorkel gear"; on full-face masks: "there is currently not enough evidence to show a direct increase in risk", theories include "Carbon dioxide buildup", "Difficulty removing the mask", "Poor fit allowing leaking of water"; "breathe only through your nose using slow, calm breaths"; "Practice breathing through the snorkel and removing the mask on your own before you get in the water."; "If you are renting equipment, rent only from a licensed vendor, and talk to them about using this equipment properly." Read on 2026-10-09.
[5]
Decathlon (manufacturer): A Guide to Selecting the Perfect Size for Your Easybreath Mask
Measure "the distance between your chin and your eyes": less than 12 cm (4.7 in) S/M, more than 12 cm M/L; "If there's no space between the silicone skirt and your chin, then this is the mask for you." Read on 2026-10-09.

Last checked October 9, 2026. General information from official sources, not medical, safety-training or professional advice. Snorkeling carries real risks, including drowning: never snorkel alone and follow the manufacturer's instructions and local lifeguard guidance.