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Dear Clinic · Filler · Smile Line Comfort
Smile Line Comfort

Do Dermal Fillers for Smile Lines Hurt? A straight account of the appointment

There is something to feel, and pretending otherwise helps nobody. Most people describe a short sting where the needle enters and a firm pressure as the gel spreads underneath — strongest nearest the mouth corner, mildest in the cheek above the groove, where a good deal of the volume usually goes.

Placed slowly, at low pressure Comfort measures set at consultation Open 365 days
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The Direct Answer

What a smile line correction actually feels like

Briefly, yes. Expect a sharp sting as each entry point is made and a spreading pressure as hyaluronic acid opens the layer beneath the fold. The nasolabial groove runs beside the mouth, which is well supplied with nerve endings, so this area is felt more than a temple and less than a lip. Which comfort measures apply to you is confirmed with your director at the consultation.

Two things about our planning change that experience before anything is injected. The first is that a fold is frequently treated from above: where the reading finds the crease is driven by a mid-face that has descended, most of the volume is assigned to the cheek, and the cheek is markedly less sensitive than the groove itself. The second is that the map is drawn first, so the number of entry points is fixed in advance and each pass is planned before it is made.

One product fact is worth knowing if discomfort is your main worry: Juvederm carries lidocaine within the syringe, which is part of why it is often chosen for sensitive placements. Whether that family suits your fold is a separate question, and the reading answers it; either way the choice is discussed with you before treatment begins.

Zone By Zone

Which parts of a nasolabial correction you notice, and which you barely do

Sensation over a smile line is not uniform. It follows the depth of the pass and the distance from the mouth.

Where the pass goesHow it tends to feelWhat is being done about it
The entry pointA short, definite sting lasting a second or two. Bruising, when it happens, usually starts here rather than along the fold.Entry points are fixed on the map before the session, so there are as few of them as the design allows.
The deep plane, over boneHeavy pressure and a dull ache instead of a sharp pain. Most people find this the strangest part of the appointment; few call it the worst.The gel is advanced slowly and at low pressure, which is also the safety requirement in this region.
The cheek above the foldThe mildest zone of the appointment. Pressure, and a sense of fullness building.Where descent drives the groove, this is where the larger share of the plan is placed.
The mouth cornerThe tenderest point, particularly for a fine superficial correction near the skin surface.Worked last, in small increments, with the side compared before the pass is finished.

Pain thresholds differ enormously, and so do the plans: a crease refinement and a mid-face rebuild are not the same appointment. Nothing here is a promise about your own session.

The Dear Signature Technique

Four steps that decide how much a smile line has to be worked

Comfort in this region is mostly a by-product of planning. Fewer passes, correct depth, and the shape judged before swelling arrives.

01
Dear Shape

Grade the groove before touching it

The EVE Muse 3D capture under five light sources shows whether you have a true skin crease, a fold created by a cheek that has dropped, or both together. That grading decides where the first pass goes, and a plan that starts in the right place needs fewer corrections later.

02
Dear LayerFill

Set the depth so the surface is disturbed less

Placement is distributed across the Deep, Mid and Superficial planes, each with its own written allowance. Support built underneath means the delicate superficial work near the mouth can stay small.

03
Dear BalanceControl

Spread the volume so no point along the fold is overloaded

Gel concentrated at one deposit tightens the tissue around it, which is uncomfortable at the time and visible afterwards. Distributing by layer along the groove keeps the pressure sensation even, and the two sides are compared with you sitting upright while there is still time to adjust.

04
Dear LineFit

Finish at the mouth corner, then stop

The corrected line is fitted to the cheek flow and the corner of the mouth and checked in motion. Knowing when a fold is finished is what keeps the last, most sensitive minutes short.

Every pass is director-performed. The facial artery and its angular branch run close to this groove, so the depth and the speed are not negotiable here, and the same person who graded your fold holds the syringe over it.

Afterwards

How much swelling a treated smile line brings

Some, and it is at its most obvious in the early days before easing gradually. Hyaluronic acid binds water, so a fresh correction commonly looks fuller than the design intends and the fold can appear over-corrected for a while. How much you get, and how long it takes to go, differs between people.
Judge nothing while it is present. The shape you assess in the mirror on day one is the gel plus the water it has drawn. A review appointment is arranged with you at the consultation for exactly that reason, and the design is read there.
Bruising starts at the entry points and rarely along the whole fold. It is more likely near the mouth corner, where small vessels are plentiful, and it is one of the ordinary outcomes of this treatment even when the session runs exactly to plan.
Pressure on the mid-face is the thing to manage. Resting your cheek on your hand at a desk, sleeping face down, a firm mask edge or heavy spectacle frames all press on fresh volume in precisely this area while the layers are still knitting in.
Heat exaggerates both. Saunas, hot yoga and alcohol widen vessels, which makes swelling and bruising more pronounced for a few days. Talking, eating and smiling normally are fine.
Reading Your Own Symptoms

Ordinary after a nasolabial filler, and the signs that need us now

The published safety literature on soft-tissue fillers is specific about what matters here. So are we.

What you noticeHow to read itWhat to do
Tenderness, swelling, a small bruiseOrdinary. The tissue has been opened and water has been drawn into the gel.Keep the area cool and unpressed; carry on as normal otherwise.
The fold looks over-filledCommon in the first days while swelling is at its height.Wait for the review appointment before judging the correction.
A firm point or slight unevenness along the grooveCan happen, and is usually correctable — including by dissolving the gel.Tell us at the review, or call if it is bothering you sooner.
Skin turning white, mottled or duskyNot ordinary. Blanching is the first sign the literature flags for vascular compromise.Contact the clinic immediately, on the same day.
Pain that escalates instead of easingNot ordinary. Discomfort should decline day by day.Contact the clinic immediately.
Any change in visionRare and serious; visual loss after facial filler is documented in the ophthalmology literature.Contact us immediately and seek urgent medical care.

This is the reason a fold is director-performed here, placed slowly in mapped planes, with hyaluronidase kept within reach in the room. It is also why we decline some requests outright: a groove that would barely move under gel is not worth the exposure, and skin carrying active inflammation or infection at the entry points is treated another day. Where your reading puts the cause in cheek descent, what we recommend may be a lifting session and no injection into the fold at all.

Before & After

A treated smile line, once the settling is over

Unretouched, shown with consent. Individual results vary.

Nasolabial fold filler before and after at Dear Clinic — the smile line shadow is softened once swelling has settled
Nasolabial filler · before / after — the groove eased, photographed after the settling period

All photos are unretouched before/after cases of the same person under the same conditions, treated at Dear Clinic and shown with consent. Individual results may vary; no specific outcome is implied or promised.

The nasolabial fold filler page sets out the anatomy, the three-plane protocol and further cases, and the dermal filler hub covers every area we treat with hyaluronic acid.

Published Rates

What the appointment costs, and what is quoted separately

Charging follows the cubic centimetre, by family. A fold plan is often split between the crease and the cheek above it, so the total depends on where the reading sends the volume — and that split is set with you on screen before anything is opened.
Hyaluronic acid, per 1 ccNoteListed rate
The ChaeumOur Korean house family, standard per-cc line₩130,000 (≈ $95)
Belotero (Germany)CPM multi-density particles, few nodules, four lines₩300,000 (≈ $215)
RestylaneSwedish family, FDA and CE certified₩350,000 (≈ $250)
JuvedermVycross cross-linking; lidocaine within the syringe₩400,000 (≈ $285)

Published rates as of September 2026; KRW is what you pay and USD is shown for reference only. The card is the same for residents of Seoul and for international patients, with no visitor surcharge, and consultation is conducted in English. Anything beyond the volume placed — a review visit, aftercare, any additional treatment — is quoted to you at consultation, never assumed. The transparent price list carries every other published rate.

In the clinic

Where a fold is injected and where you rest afterwards

Aesthetic care room at Dear Clinic Cheongdam with an LED panel, used for post-injection care
A care room for the quiet minutes after a mid-face session.
Waiting nook and coffee bar along the treatment corridor at Dear Clinic Cheongdam
The corridor nook where patients wait before the review is booked.
Medical Team

Five doctors, one standard

Director-performed treatment is a Dear promise — your procedure is planned and performed by the doctors below.

Dr. Jemin Kim — Medical Director and Founder, Dear Clinic
Dr. Jemin Kim
Yonsei University College of Medicine
Medical Director · Founder
Dr. Sanghyun Lee — Director, Dear Clinic
Dr. Sanghyun Lee
Seoul National University College of Medicine
Director
Board-certified · Family Medicine
Dr. Seonhaeng Lee — Director of Aesthetic Medicine, Dear Clinic
Dr. Seonhaeng Lee
Chosun University College of Medicine · Residency, Samsung Medical Center
Director, Aesthetic Medicine
Dr. Daeun Jung — Director, Dear Clinic
Dr. Daeun Jung
Ajou University College of Medicine
Director
Board-certified · Family Medicine
Dr. Woojae Jung — Director of Aesthetic Medicine, Dear Clinic
Dr. Woojae Jung
Seoul National University — B.S. in Medicine
Director, Aesthetic Medicine
Patient Reviews

What our patients say

Real verified reviews from our Google Business Profile.

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FAQ

Smile line filler and discomfort, question by question

Do dermal fillers for smile lines hurt?
Briefly, and unevenly. A sharp sting marks each entry point, then a spreading pressure as the gel opens the layer under the fold. The zone nearest the mouth corner is the tenderest; the cheek above the groove, where a large share of the volume often goes, is the mildest. Which comfort measures apply to your appointment is settled with your director at the consultation.
Is it worse than filler anywhere else on the face?
It sits in the middle. The mouth and its surrounding tissue are richly supplied with nerve endings, so a nasolabial correction registers more than work on a temple or a forehead, and generally less than a lip design, where the tissue is thinner still. Where your own plan lands on that scale depends on how much of it is superficial work near the mouth.
What is done to keep the appointment comfortable?
Four things, and none of them is a claim about a protocol we have not published. The map fixes the number of entry points in advance. The gel advances slowly and at low pressure, which is the safety requirement anyway. Support placed in the cheek reduces how much fine work the sensitive zone needs. And the specific comfort measures for your session are confirmed with your director beforehand.
Does the choice of filler change how much it hurts?
It can. Juvederm carries lidocaine within the syringe, which is one reason it is frequently selected for sensitive placements. That is a genuine difference between the families stocked here. It is not the only criterion, though: the family is chosen for what the fold needs mechanically, with comfort weighed alongside that and never ahead of it.
How much swelling should I plan for?
Enough to make the fold look over-corrected at first. Hyaluronic acid binds water, so the early appearance includes volume that is not gel. It is at its most obvious in the first days and eases gradually, and the amount varies between people and between plans. The design is properly read at the review appointment arranged with you.
Will I be able to go to dinner the same evening?
Many people do, and eating, talking and smiling are all fine straight away. What is worth avoiding for a few days is heat and alcohol, which widen vessels and make both swelling and bruising more pronounced, and anything that presses on the mid-face. A bruise near the mouth corner is possible whatever you do, so allow for it if you have something fixed in the diary.
Can I take a painkiller or use ice afterwards?
Bring this question to your consultation instead of to a search engine, because the answer depends on your medical history and on what your director wants watched in your case. Written aftercare is given to you on the day, and the clinic is open 365 days, so a call with a question is always possible.
When should I contact the clinic urgently?
Skin that turns white, mottled or dusky over the treated area; pain that escalates instead of settling; or any change in vision. Those are the signs the published safety literature flags for vascular compromise, and they mean contacting us immediately rather than waiting for the review. Hyaluronidase is kept within reach for this reason.
My smile lines look uneven a few days later. Is that normal?
Uneven settling between the two sides is common while swelling is clearing, and the sides rarely resolve at the same pace. A genuine asymmetry that persists after the area has calmed is assessed at the review and is usually correctable, including by dissolving part of the gel. Tell us sooner if it worries you.
Does a top-up hurt less than the first appointment?
Often it involves less work, which tends to matter more than anything else. When part of the original design is still supporting the fold, a second visit is usually a smaller volume placed where the line has relaxed, so there are fewer passes to feel. It is billed on the volume actually placed, like any other session.
What does the appointment cost, and is the rate the same for visitors?
Billing follows the cubic centimetre and the family chosen: ₩130,000 (≈ $95) per cc with our Korean house gel, and the imported families at their own listed per-cc rates. The published card applies to residents and to international patients alike, with no visitor surcharge. Your total is fixed and approved before treatment begins.
Consultation

Ask what your own fold will need

Tell us what the smile line does when you are resting and when you smile — answered in English as soon as possible.

Scientific Evidence

Peer-reviewed references behind the warning signs listed above

The papers below are the basis for the urgent column of that table, not for any statement about how your own appointment will feel. They document the vascular anatomy that makes this region director-only, the ophthalmic complication that makes blanching and visual change an emergency, how facial assessment guides where a gel is placed, and how hyaluronic acid is dissolved when it has to come out.

Each reference resolves to a DOI in an indexed journal.

  1. Scheuer J et al. Anatomy of the Facial Danger Zones: Maximizing Safety during Soft-Tissue Filler Injections. Plastic & Reconstructive Surgery. 2017. doi:10.1097/prs.0000000000002913
  2. Kato J et al. Visual loss after aesthetic facial filler injection: a literature review on an ophthalmologic issue. Arquivos Brasileiros de Oftalmologia. 2022. doi:10.5935/0004-2749.20220048
  3. de Maio M et al. Facial Assessment and Injection Guide for Botulinum Toxin and Injectable Hyaluronic Acid Fillers: Focus on the Upper Face. Plastic & Reconstructive Surgery. 2017. doi:10.1097/prs.0000000000003544
  4. Baker A. The use of hyaluronidase in aesthetic medicine: a literature review. Journal of Aesthetic Nursing. 2016. doi:10.12968/joan.2016.5.3.129

References are provided for information — outcomes vary by individual and are assessed at your diagnosis.

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