A mustache is the most visible piece of facial hair you can have, and the easiest to wreck in a single snip. The good news: trimming one is simple, as long as you go slowly, in the right order, and take less than you think you need to.
This is the manual. Tools first, then the steps, then troubleshooting.
What you need
- Small, sharp scissors. Proper grooming scissors with fine tips. Kitchen scissors will not do.
- A fine-toothed comb. A small mustache comb is ideal; any fine comb works.
- A trimmer (optional), for evening out length on a short mustache.
- Good light and a mirror you can get close to.
- A towel in the sink, so you can see what you have taken off.
The steps
Step 1: Start with a clean, dry mustache
Wash it, then let it dry completely. Wet hair hangs longer than dry hair. If you trim it wet, it springs up shorter than you intended. This is the single most common mustache mistake there is.
Step 2: Comb it straight down
Comb the hair down over your top lip, in the direction it grows. This shows you where the hairs actually fall, and which ones are too long.
Step 3: Trim the lip line first
The lip line — the bottom edge of the mustache, along your top lip — is what matters most. Working from the center outward, snip only the hairs that cross over the edge of your lip. Make small cuts. Keep your mouth relaxed and closed; if you stretch your lip, the line moves.
Step 4: Do one side, then match it
Trim from the center to one corner. Then do the other side to match. Check in the mirror straight on, not at an angle, before you take any more off.
Step 5: Even out the length (optional)
If your mustache is getting bulky, a trimmer with a guard can take a little length off the whole thing. Comb it the way you wear it first. Go one guard longer than you think; you can always go again. Our clipper guard chart shows what each number leaves.
Step 6: Tidy the top edge
The top edge, under the nose, usually only needs a few stray hairs removed. Do not reshape it unless you are deliberately changing the style.
Step 7: Clean up the corners
Decide whether your mustache stops at the corners of your mouth or continues past them. Trim stray hairs at the corners so both sides end in the same place.
Step 8: Comb it into place and check
Comb it the way you wear it, step back from the mirror and look at your whole face. Leave it a day before trimming any more. A mustache always looks different the next morning.
Mustache styles, quickly
- Chevron: full and thick, covering the top lip, trimmed straight along the lip line. Classic.
- Pencil: very thin and neat, just above the lip. High-maintenance.
- Handlebar: grown long at the sides and curled up with a little wax. Needs length and patience.
- Horseshoe: runs down the sides of the mouth to the jaw. Bold.
- Mustache with a beard: trimmed to blend into the beard so it does not hang over the lip.
If you have a beard, the mustache is usually trimmed a little shorter than the beard so it stays off your lip. Our guide to beard trim styles shows how the two work together.
How often to trim
- Lip line: every few days to once a week. This is the part that grows into your mouth.
- Overall length: every two to four weeks, or at your regular barber visit.
- Shape: leave major shaping to your barber, every month or so.
Troubleshooting
“I cut too much off one side.”
Stop. Do not try to even it by cutting the other side shorter — that is how mustaches disappear. Let it grow for a few days, then even it out properly, or let your barber do it.
“It looks crooked.”
Check whether you were smiling, talking or stretching your lip when you trimmed. Relax your face, comb it down, and look again straight on.
“It sticks straight out.”
Some mustache hair grows forward. A little beard balm or mustache wax trains it down. Our post on beard oil vs. balm explains which does what.
“It is patchy in the middle.”
Many mustaches are thinner under the center of the nose. Growing it slightly longer and combing to the sides often hides the gap.
Mustache care beyond trimming
- Wash it when you wash your face. Food and coffee collect in a mustache more than anywhere else on your face.
- Comb it daily. It trains the hair to lie the way you want, and it stops stray hairs from growing in odd directions.
- A drop of oil keeps the hair soft and the skin underneath comfortable. A tiny amount is plenty.
- A little wax for styles that need hold, like a handlebar. Warm it between your fingers and work it in from the center outward.
- Dry it properly after eating or drinking. A soggy mustache loses its shape fast.
Choosing a mustache for your face
- Wider faces usually suit a fuller mustache that does not extend far past the corners of the mouth.
- Narrow or long faces can carry a wider style, like a horseshoe or a mustache that runs slightly past the corners.
- Thin upper lips often look best with a fuller chevron that covers part of the lip.
- Prominent noses are balanced by a fuller mustache rather than a thin pencil.
Not sure? Ask your barber. They see your face from angles you never do.
Mistakes that ruin a mustache
- Trimming it wet. It always ends up shorter.
- Using a trimmer without a guard on the lip line. One slip and you have a gap.
- Chasing symmetry. Trimming back and forth to make it perfect until there is nothing left.
- Trimming in bad light. You cannot see fine hairs in a dim bathroom.
- Cutting the top edge to make it look neater. This shrinks the whole mustache.
Shaving around a mustache
If you shave the rest of your face, keep a clear border around the mustache. Shave up to it carefully with short strokes, and never shave across the bottom of it. If razor bumps are a problem on your upper lip, the Mayo Clinic’s page on ingrown hair covers why they happen. A hot towel shave at the shop can keep the mustache and shave the rest.
Growing a mustache from scratch
Give it at least three to four weeks before you judge it, and do not trim anything but the lip line in that time. Many mustaches look thin and uneven in the first couple of weeks and fill in later. Our beard-growth timeline follows the same pattern.
Mustache and haircut, together
A mustache does not live on its own. If your haircut is sharp and your mustache is shaggy, the whole look reads as unfinished, and the other way around. The easiest way to keep them in step is to have both done at the same visit. If you have a beard, ask for the mustache to be blended into it so the two read as one shape; if you are clean-shaven apart from the mustache, ask for a clean shave line around it.
A few pairings that tend to work:
- Chevron + classic taper: traditional and polished.
- Short mustache + crew cut: clean and low-maintenance.
- Handlebar + side part: a deliberate, old-school look that needs a little upkeep every day.
- Mustache with a short beard + fade: modern and very common. Our beard fade guide covers the blend.
The cheat sheet
- Dry, never wet.
- Comb down first.
- Lip line, center out, small snips.
- Match the second side to the first.
- Leave the top edge alone.
- Wait a day before trimming more.
When to let a barber do it
- The first shaping of a new mustache.
- Changing style — from chevron to something narrower, for example.
- Blending it into a beard.
- After a home trim went wrong. Our guide on fixing a bad haircut covers the same principles.
At our shops, mustache work is part of the beard sculpting and line work in Classic & Beard (from $35). Between visits, an Edge Up (from $12) cleans the outlines.
The Tonawanda shop
578 Delaware St., Tonawanda, NY 14150. Open Tuesday through Friday 7AM to 7PM and Saturday 8AM to 1PM; closed Sunday and Monday. Dorian Mayham, Sam Balesteri and Zaid Blasiny all shape mustaches and beards.
Book online or call 716-389-0192. Get the shape set once, and keeping the lip line tidy at home becomes a two-minute job.
