Nostril width and alar flare are separate findings with different incisions. Where the incisions go, what governs the scars, and why the base is judged after the tip.
Alar base reduction is a small operation with a permanent mark. That combination makes it one of the procedures most worth understanding in advance — not because it is risky in an unusual way, but because the decisions inside it are finer than the request that leads to it.
“My nostrils are too wide” covers two different findings. It also frequently describes a nose whose base is not the problem at all. This page separates those situations, explains where the incisions go and what governs how the scars behave, and sets out why the base is usually judged after the tip rather than before it. It does not cover the roundness of the tip itself, which is a separate diagnosis, and it does not cover combining base work with a revision.
Wide nostrils and flaring alae are two separate findings that call for different incisions. Nostril width is reduced with an incision at the base of the nostril sill; flare is reduced with an incision in the crease where the nostril meets the cheek. Both leave permanent scars, placed where they are least conspicuous. How much narrowing is sensible depends on the width of the face and the position of the tip, and the base is generally assessed after the tip position is set, because raising the tip changes how wide the base reads.
On this page
- Two findings that both sound like wide nostrils
- How they are told apart
- Where the incision goes
- What decides how a scar behaves
- How much narrowing is sensible
- Why the base is judged after the tip
- Marking, and why symmetry is planned rather than assumed
- What this operation does not change
- Questions patients ask
Two findings that both sound like wide nostrils
Look at the bottom of a nose from the front and there are two distinct measurements.
Nostril width is the size of the openings themselves — how wide each nostril is from side to side. This is measured across the sill, the flat strip of tissue at the base of each nostril where it meets the upper lip.
Alar flare is how far the outer wings of the nose curve outward beyond the base. A nose can have modest nostril openings and pronounced flare, so that the widest part of the nose sits above the base rather than at it.
The distinction matters because each is reduced by a different incision, in a different place, with different consequences for the scar and for the shape of the nostril afterward. Reducing width where the finding is flare narrows the openings and leaves the outward curve; reducing flare where the finding is width flattens the wing without changing the opening.
Many noses have both, in which case a combined approach is used and the balance between the two is part of the plan rather than a detail of it.
How they are told apart
The assessment is done from the front and from below, in that order, and against the rest of the face rather than in isolation.
A common reference is the distance between the inner corners of the eyes, which on many faces sits close to the width of the nasal base. It is a starting point rather than a rule — faces vary, and a base that measures wider than the reference can look entirely correct on a wide face.
From below, the shape of each nostril opening is examined for size, symmetry and orientation. Asymmetry between the two sides is common and is worth noting before surgery, because it will still be there afterward unless it is addressed deliberately.
The thickness of the tissue at the base is also assessed. Thick, sebaceous skin at the alar rim behaves differently from thin skin, both surgically and in how the scar matures.
Where the incision goes
There are two standard placements, matching the two findings.
| Finding | Incision placement | What it changes |
|---|---|---|
| Nostril width | Across the sill at the base of the nostril, inside the nostril floor | Reduces the width of the opening itself |
| Alar flare | In the alar crease, where the wing of the nose meets the cheek | Reduces the outward curve of the wing |
| Both | A combined approach following both lines | Narrows the opening and the flare together |
The placement in the alar crease is chosen because a natural crease already exists there. A scar that follows an existing crease is far less conspicuous than one crossing flat skin, which is why the incision is kept precisely in the crease rather than above or below it — a line that drifts onto the cheek is noticeably more visible than one that stays in the fold.
The sill incision is placed so that the resulting scar sits at the junction between the nostril floor and the upper lip, again taking advantage of an existing transition.
What decides how a scar behaves
This deserves a direct statement rather than reassurance: alar base reduction leaves permanent scars. The aim is to place them where they are least conspicuous and to keep them fine, not to avoid them.
Several factors influence how they mature, and only some are under surgical control.
- Placement. A scar inside an existing crease or transition is less visible than one on flat skin. This is the single largest factor and it is a surgical decision.
- Tension. A closure under tension widens as it heals. This is one reason that aggressive narrowing carries a scar cost as well as a shape cost.
- Skin type. Thicker, more sebaceous skin at the alar rim tends to produce a more noticeable scar than thin skin. Individual healing tendency, including any history of thickened or raised scars elsewhere, is asked about before surgery.
- Time. Scars are at their most visible in the early months and continue to change for a year or more. A scar judged at six weeks is not the scar you will have.
What can reasonably be said is that placement and closure are chosen to keep the scars inconspicuous. What cannot be said is that they will be invisible, and any consultation that promises that is over-promising.
How much narrowing is sensible
There is a temptation to treat this operation as a dial: the wider the nostrils, the more that comes off. The reasoning does not hold, for three reasons.
The base has to match the face. A narrow base on a wide face looks incongruous rather than refined, and the nose reads as pinched at the bottom while remaining wide above.
The nostril has a function. The nostril opening is part of the airway. Substantial narrowing can affect airflow, particularly in a nose that is already tight internally.
Excess narrowing changes the shape of the opening. Beyond a certain point the nostril stops looking smaller and starts looking differently shaped — slit-like or oddly angled — which is more noticeable than the original width.
There is a fourth reason that applies specifically to this operation: what is removed cannot be put back. Cartilage can be added, bridges can be raised, tips can be re-supported — but the tissue at the base of the nostril has no equivalent replacement, and a base narrowed too far is among the harder results to improve. That asymmetry between the two directions is why the conservative side of the range is the default here in a way it is not everywhere else in rhinoplasty.
So the target is proportion rather than minimum.
A practical consequence follows for anyone weighing this procedure. If you are uncertain whether you want the base narrowed, the reversible order is to address the tip and the bridge first, live with the result for several months, and reassess the base afterward. Many people find the question has answered itself by then. In practice the amount removed is measured and marked before any incision is made, and it is checked against the front view rather than the base view, because the front view is how the result will be seen.
Why the base is judged after the tip
This is the sequencing point, and it changes how many patients end up needing the procedure at all.
Raising and projecting the tip changes how the base reads. A tip that sits low spreads the nose visually at the bottom; bringing it forward and up gathers the base inward in appearance, and the nostrils look narrower without anything having been removed. Some patients who arrive asking for base reduction do not need it once the tip is addressed.
The reverse is also true: a plan that narrows the base first and then raises the tip can end up with a base that is too narrow for the finished nose.
For that reason, where tip surgery is part of the plan, the base is assessed after the tip position is set — sometimes during the same operation, once the tip is in place. Where the tip is not being altered, the base can be assessed directly. How the tip itself is diagnosed and what changes its apparent width is covered in Bulbous Tip: Why the Tip Reads Round and What Actually Changes It.
Marking, and why symmetry is planned rather than assumed
Almost all of the accuracy in this procedure happens before the first incision, while the patient is sitting upright.
The amount to be removed is marked on each side separately, in the upright position, because tissue shifts when a person lies down and a mark made on a reclined patient does not describe the nose that other people see. The two sides are measured independently, since matching nostrils are uncommon — one is often slightly larger, differently angled, or set at a different height.
That last point is worth pausing on, because it changes what a good result looks like. Removing an identical amount from two unequal nostrils preserves the inequality at a smaller scale. Correcting toward symmetry means removing different amounts, which is a decision made deliberately and marked accordingly.
Complete symmetry is not a realistic target in any case. Faces are not symmetrical, noses are not symmetrical, and the honest aim is a base that reads even at conversational distance rather than one that measures identically. Pointing out the pre-existing asymmetry during the consultation, and looking at it together on the base-view photograph, is more useful than discovering it afterward — patients who were unaware of it before surgery tend to attribute it to the operation.
The marking is also checked against the front view before anything is cut. The base view shows the openings clearly, but the front view is where the result will be judged, and a reduction that looks correct from below can look excessive from the front.
What this operation does not change
Alar base reduction narrows the bottom of the nose. It does not do the following, and expecting it to is a common source of disappointment.
It does not narrow the tip. A round tip above a narrowed base remains a round tip, and the contrast can make it more obvious rather than less.
It does not change the bridge, the profile or the height of the nose.
It does not correct asymmetry between the two sides unless the plan is designed to do so, with different amounts on each side.
Where base work is being considered as part of a revision, the assessment differs — previous incisions, existing scars and altered tissue all change what is possible — and that belongs to Correcting the Alar Base During a Revision.
Questions patients ask
Will the scar be visible?
The scars are permanent and are placed in the alar crease and at the nostril sill, where existing transitions help conceal them. How conspicuous they are depends on placement, tension at closure, skin type and individual healing, and they continue to change for a year or more.
Can nostrils be narrowed without surgery?
No non-surgical treatment reduces the width of the nostril base. What can change how the base reads is the position of the tip, which is why the tip is assessed first.
Will it affect my breathing?
Modest, well-planned narrowing generally does not. Substantial narrowing can, particularly in a nose that is already tight internally, which is one of the reasons the amount is limited by proportion rather than by request.
Can it be done on its own?
Yes, when the tip and bridge are not being altered. Where tip surgery is planned, the base is normally assessed afterward, because the tip position changes how wide the base looks.
Are the two sides always reduced by the same amount?
Not necessarily. Nostrils are frequently asymmetric to begin with, and where that is the case the amounts are planned differently on each side. Existing asymmetry is worth pointing out before surgery rather than after.
How long does the swelling last?
The base settles more quickly than the tip, but the final appearance of both the shape and the scars takes months rather than weeks. Follow-up at Edition runs at day 1, day 5, two weeks, one month, three months and six months.
About the author
Dae-hee Han, MD — Board-Certified Plastic Surgeon (specialist certificate No. 2045, issued 3 March 2014; medical licence 00394, issued 26 February 2009). Master’s degree, Ajou University School of Medicine. Training at the Craniofacial Center, Chang Gung Memorial Hospital, Taiwan (2013), and the IFAAS Mini Fellowship, University of Florida, USA (2016). Three rhinoplasty papers published in SCIE-indexed international journals. More than 4,500 nose surgeries — Dr. Han’s career total from 2017 to 2025, counted from medical records. Eighteen years in practice since medical licensure in 2009; thirteen years as a board-certified plastic surgeon. He carries out consultation, surgery and follow-up personally; fee guidance is given by the clinic’s consultation manager.
Last reviewed: 2026-08-15
Clinic information
Edition Plastic Surgery Clinic & Dermatology
6F, OPUS 407, 407 Gangnam-daero, Seocho-gu, Seoul 06614, Republic of Korea
One minute on foot from Gangnam Station Exit 10
Tel +82-2-591-0100 · editionprs@gmail.com
Consultation hours: Monday to Friday 10:00–19:00 · Saturday 10:00–17:00 · closed Sundays and public holidays
Disclaimer
Individual results may vary. Bleeding, infection, swelling, asymmetry, and scarring can occur. Please decide after a full consultation with a board-certified specialist.
This page is general medical information. It is not a diagnosis, and it does not promise a particular outcome. Surgical fees are given after an in-person consultation.