Your beard isn't sunscreen. It's a sunburn stencil.

Quick answer: Wear a broad-spectrum SPF 30+ on the skin above the beard line, on your nose, ears, upper lip and neck, and on any patch where the hair runs thin. Put it on before your beard oil, and top up the exposed edges every two hours outdoors.

Picture a guy back from a Saturday on the lake. Full beard, ball cap, feeling smart about it. Then he looks in the bathroom mirror and finds a pink band across both cheekbones, a red nose, and a clean pale outline where the hair starts. He didn't get burned in spite of the beard. The beard drew the map.

Where the burn actually lands

Hair blocks some sun. Nobody can hand you a number for your face, because it depends on how thick, how long and how evenly your beard grows. That's the point. A beard is uneven coverage, and the sun finds the gaps.

The usual trouble spots:

• The cheekbone line. Skin above where you trim is fully exposed, and it sits at the best angle for overhead sun.
• The nose and the tops of the ears. No hair, no excuse.
• The upper lip and the skin under the mustache. Often thin hair, and the lip itself has almost no defense.
• Patchy zones. Almost every beard has one, usually on the cheeks or under the lower lip.
• The neck. If you keep a clean neck line, everything below it is bare skin facing the sky every time you look down at a fish, an engine or a phone.

Short stubble is the worst case. It looks like cover and acts like a screen door.

And the skin under a thick beard isn't a free pass either. Hair that's been on your face for a year still thins out at the edges, and you'll be wearing a hat and sunglasses over the part that's covered anyway. Protect the margins and the bare spots. Don't try to paint the whole forest.

The 90-second routine

Do it after you wash your face and before anything goes on the beard.

1. Apply to the skin first. Use your fingertips, not your palm. Part and press the hair so the sunscreen reaches the skin along the cheek line, over the cheekbones and into any thin areas.
2. Use more than feels right. Most people under-apply, and a beard makes it worse because the hair soaks up product that never reaches skin. Go in two passes if you have to.
3. Cover the forgotten parts. Nose, ears (front, back and top), the back and sides of the neck, and the strip of skin just above the mustache.
4. Wait a minute. Brush your teeth. Let it set.
5. Then oil or balm. Product on top of sunscreen is fine. Sunscreen on top of oil just slides around.

For the lip, use a balm with SPF 30 in it. Keep it in your truck's cup holder, not the bathroom drawer.

Staying covered past 10 a.m.

Reapply every two hours when you're outside, and after swimming or heavy sweating. Nobody wants to re-lotion a beard at a job site, so don't. A stick works better here. Run it along the cheek line, over the nose and across the ears. It takes ten seconds and doesn't gum up the hair.

A hat with a real brim does more than any product on your ears and neck. So does shade at lunch. Sunscreen is the floor, not the whole plan.

The honest annoyance: sunscreen in a beard can feel tacky by afternoon, and it can leave pale flecks in dark hair. Wash it out at night with your normal beard wash, and a bit of leftover residue won't matter. If you skip it because it's a little inconvenient, you'll pay for it in a way that doesn't wash out.

Pick a mineral sunscreen

Any broad-spectrum SPF 30+ you'll actually wear every day beats skipping it. Dermatologists and the FDA still consider approved chemical sunscreens safe and effective, and sun damage is a proven cause of skin cancer. That comes first.

Between two options you'd both use, we'd pick mineral. Zinc oxide and titanium dioxide sit on top of the skin and cover the full spectrum. They're also the only two filters the FDA proposed in 2019 as "generally recognized as safe and effective," while asking makers for more safety data on the others. FDA studies published in JAMA in 2019 and 2020 found that common chemical filters, including oxybenzone and avobenzone, were absorbed into the bloodstream. And Hawaii, Palau and the U.S. Virgin Islands ban oxybenzone and octinoxate to protect coral reefs. Mineral formulas are also usually gentler on skin that's already irritated from shaving a neckline or trimming a cheek line.

The trade-off is real. Some mineral formulas leave a white cast, and a white cast on a dark beard looks like dandruff for your face. Tinted versions fix most of it.

Worth a look:

• EltaMD UV Physical SPF 41 (tinted). The tint helps the cast disappear against skin and stubble.
• Blue Lizard Sensitive Mineral SPF 30. A sensible pick for skin that reacts to everything.
• Badger Clear Zinc SPF 30. A simple zinc formula.
• CeraVe Hydrating Mineral Sunscreen SPF 30. A lotion-type formula that tends to be easier to work down through hair.

Pick one and use it for two weeks before you judge it. Most people drop a sunscreen after one bad morning because they put on too little or too much.

What to do with the skin you've been ignoring

If you've gone years without sunscreen under the beard, don't panic. Start today. Look at the cheek line, the nose and the ears in good light, and see a dermatologist about any spot that's new, changing, bleeding or won't heal. That's a skin check, not a grooming decision, and it's worth booking even if you feel fine.

For the daily routine, keep the rest simple. A decent cleanser, a moisturizer if your skin's dry, and the ingredients that actually matter in whatever you buy. If you're also shaving the lower neck, stop shaving your neck the way you shave your face, because freshly shaved skin burns faster and complains louder.

Grow the beard. Keep it neat. Just don't trust it to cover for you, because the first thing it shows after a long day outside is exactly where it didn't.