Skin & Aesthetics · Injectables

Dermal Fillers in Seoul: Hyaluronic Acid Filler Explained

Dermal fillers are gel injections, most often hyaluronic acid, that restore lost volume, soften deep lines and refine contours such as the cheeks, chin, temples and under-eyes, with results that typically last 6–18 months. At Hommage Clinic in Gangnam, Seoul, Dr. Kim Hyunbin plans each treatment around your facial proportions and explains the risks, including how hyaluronic acid filler can be dissolved.

Dermal fillers at a glance

What are dermal fillers and how do they work?

Dermal fillers are soft gels injected under the skin to replace volume and support the tissue above them. Most fillers used for the face are made of hyaluronic acid (HA) , a sugar molecule that occurs naturally in your skin and holds water.

In filler form, the hyaluronic acid is cross-linked so it lasts months rather than days. Firmer gels are placed deeper, near the bone, to build structure in the chin, nose or cheeks; softer gels are used in thin-skinned areas such as the under-eyes and lips. Your body gradually breaks the gel down, so results fade over time.

Not every injectable is an HA filler. Calcium hydroxylapatite and poly-lactic acid products work mainly by prompting your own collagen over weeks; these are covered on our collagen stimulators page. Permanent fillers such as liquid silicone are not recommended for cosmetic use because complications are hard to treat.

Which areas can fillers treat?

Fillers can treat most areas where volume has been lost or where a contour needs support. Each area has its own technique and level of risk, so several have their own guide:

• Under-eyes (tear troughs): hollows that cast a tired shadow. See under-eye filler .
• Temples: sunken temples that make the upper face look narrow. See temple filler .
• Nose: a non-surgical change to the bridge or tip profile. See nose filler .
• Chin and jawline: projection and a smoother V-line. See chin filler .
• Cheeks, nasolabial folds and marionette lines: restoring mid-face support and softening deep folds.
• Lips: hydration, definition or subtle volume.

Balancing several areas with small amounts often looks more natural than a large volume in one spot. That approach is described in facial balancing treatment .

Do fillers hurt? What happens during treatment

Most people feel pressure and mild stinging rather than sharp pain, because numbing cream is applied first and most HA fillers contain lidocaine. Injecting usually takes 15–30 minutes.

1. Your doctor reviews your medical history, previous fillers and medicines that increase bruising.
2. Your face is assessed at rest and while you talk and smile, and the plan is agreed with a mirror.
3. Numbing cream is applied for 20–30 minutes, then the skin is disinfected.
4. The filler is placed slowly in small amounts, with a fine needle or a blunt-tipped cannula depending on the area.
5. The result is checked from several angles, and you are shown the warning signs to watch for at home.

How long do fillers last, and what is recovery like?

Hyaluronic acid fillers typically last 6–18 months. Areas that move a lot, such as the lips, tend to fade sooner; deeper structural areas such as the chin, and low-movement areas such as the under-eyes, often last longer. Results are visible straight away but look their final shape after swelling settles at about 2–4 weeks.

• Expect mild swelling, tenderness and possibly bruising for a few days.
• Avoid pressing or massaging the area, strenuous exercise, saunas and alcohol for about 2–3 days unless your doctor advises otherwise.
• Gentle makeup is usually fine the next day.
• Avoid dental work and facial treatments with heat or pressure on the area for about 2 weeks.

Risks and possible side effects of dermal fillers

Most side effects of fillers are mild and temporary, but one rare complication is serious, and you should understand it before treatment.

• Common: swelling, bruising, redness, tenderness and small lumps that settle over days to a couple of weeks.
• Less common: asymmetry, visible bumps, a bluish tint if filler sits too close to the surface (Tyndall effect), prolonged swelling under the eyes, or infection.
• Delayed reactions: rarely, firm or tender nodules can appear weeks or months later, sometimes after an infection or vaccination.
• Vascular occlusion (rare but serious): filler can enter or press on a blood vessel and block blood flow. Without prompt treatment this can damage the skin, and in very rare cases cause vision loss or stroke. The nose, the area between the brows, the forehead, nasolabial folds and the under-eyes need particular caution.

Contact the clinic or emergency services straight away if you notice severe or increasing pain, skin that turns white, dusky or mottled purple, or any change in your vision. Early treatment with hyaluronidase matters.

Can fillers be dissolved?

Yes. Hyaluronic acid fillers can be dissolved with an enzyme called hyaluronidase, injected into the area. This is one of the main safety advantages of HA fillers: it is used urgently if a vascular complication is suspected, and electively if filler has migrated, looks lumpy or you simply prefer a smaller result.

Hyaluronidase usually works within hours to a couple of days, and more than one session may be needed. It can cause temporary swelling and, rarely, an allergic reaction. It does not dissolve calcium hydroxylapatite, poly-lactic acid or permanent fillers, which is one reason to know exactly which product you have received.

If your concern is lines caused by movement, such as frown lines or crow's feet, Botox is usually a better first step than filler.

Dermal fillers at Hommage Clinic

Hommage Clinic is a women's health and skin clinic in Gangnam, a short walk from Sinnonhyeon Station. Walk-ins are welcome, or book ahead for a set time, and a doctor plans and performs every filler treatment. You are told which product will be used before injection.

Alongside hyaluronic acid fillers, the clinic offers Hilo Wave, a hyaluronic acid injectable designed for mid-face volume and skin elasticity, and can dissolve HA fillers with hyaluronidase. Cost depends on the area, the amount of filler and the product. Cosmetic fillers are not covered by Korea's National Health Insurance, and you receive a written quote first. You can see related options in ourskin and aesthetics guide.

Mechanism

How does hyaluronic acid filler work? Depth and gel firmness

With age, the face loses volume in fat pads and bone, and the skin has less support. Hyaluronic acid filler replaces some of that support. The gel binds water, so it gives soft, natural-feeling volume, and because it is cross-linked it lasts months instead of days.

Where the filler is placed matters as much as how much is used. Firmer, more cohesive gels are placed deep, close to the bone, to rebuild structure in the cheeks, chin and nose. Softer, more flexible gels are used in thin-skinned or mobile areas such as the under-eyes and lips. Placing a firm gel too close to the surface can look lumpy or bluish, which is why Dr. Kim chooses both the product and the depth for each area.

Treatment areas

Filler areas: how long does filler last in each part of the face?

How long filler lasts depends on the product, how much is used, how much the area moves and your own metabolism. As a rule of thumb, areas that move constantly, such as the lips, fade fastest, while deep, structural areas such as the chin and areas that move little, such as the under-eyes, often last longer. Some areas also carry more risk than others because of the blood vessels that run through them, which is why each has its own technique.

Compare

Filler vs Botox vs collagen stimulators: which do you need?

These three injectables are often confused, but they solve different problems. Botox relaxes muscles that cause expression lines. Hyaluronic acid filler adds volume straight away. Collagen stimulators such as poly-L-lactic acid or calcium hydroxylapatite work gradually over weeks by prompting your own collagen, and they cannot be dissolved. Skin boosters improve hydration and texture rather than shape.

Recovery

Filler swelling and recovery timeline

Filler results are visible immediately, but what you see on the first day is not the final result. Hyaluronic acid draws in water and the tissue reacts to the injections, so mild swelling peaks over the first two days and then settles. Bruises fade over about a week. The filler integrates with the surrounding tissue over 2–4 weeks, which is the right time to judge the shape and decide whether a small top-up is needed.

Under-eye swelling can take longer to settle than other areas, and lips often look fuller for the first few days than they will later. Plan treatment at least two weeks before an important event.

Safety

Filler safety: warning signs you should never ignore

Vascular occlusion, where filler blocks or presses on a blood vessel, is rare but is the complication every filler patient should understand. The US Food and Drug Administration lists vision problems including blindness, stroke and skin damage among the rare but reported outcomes of accidental injection into a blood vessel. A 2020 systematic review of vision loss after hyaluronic acid filler found that the nose, the area between the brows and the forehead were most often involved, and that very small volumes could be enough to cause harm.

That is why safety steps matter more than speed: aspiration and slow injection of small amounts, cannulas in some areas, knowledge of facial vessels, and hyaluronidase kept on hand. At Hommage Women's Clinic, Dr. Kim explains these warning signs before treatment and how to contact the clinic quickly afterwards.

Natural results

Natural-looking filler: avoiding overfilled and “pillow face” results

An overfilled look usually builds up over time, when filler is added to the same spot again and again to chase a line, or when large volumes are placed in the cheeks and lips without considering the rest of the face. Hyaluronic acid can also stay in tissue longer than its visible effect suggests, so frequent top-ups can accumulate.

A natural plan starts with what has actually changed in your face: often a little support in the temples, mid-cheek or chin does more for a tired look than filling a fold directly. This is the idea behind facial balancing . Dr. Kim prefers modest amounts, a review at 2–4 weeks, and longer gaps between sessions.

Who should wait?

Fillers are best postponed during pregnancy or breastfeeding, with an active skin infection or cold sore in the area, or soon after dental work or a vaccination. If you have had filler elsewhere and do not know the product, tell your doctor; an ultrasound or a cautious plan may be suggested.

Evidence

Are dermal fillers safe? What regulators and research say

Hyaluronic acid fillers have been used for many years and are regulated as medical devices in Korea, the US and Europe. Most side effects are mild and short-lived. The rare serious complications are well documented, and the research on them is mostly case reports and reviews of case reports, which tell us where problems happen but not exactly how often. The cards below summarize the most useful points.

Traveling to Seoul

Dermal fillers in Seoul for international patients

Filler can be done in a single visit, but because the result settles over 2–4 weeks and the first days carry the highest chance of a problem that needs quick treatment, timing your trip well matters. Hommage Women's Clinic is in Gangnam, a short walk from Sinnonhyeon Station (Line 9 and Shinbundang Line).

Planning your visit

• Have filler early in your stay and plan at least 5–7 days in Seoul afterwards, so you can return for a check.
• Bring your passport, a list of medicines, and the name, area and date of any previous filler.
• Stop non-essential blood-thinning supplements only if your own doctor agrees, to reduce bruising.
• Send photos and questions in advance by WhatsApp, KakaoTalk or the contact form, and ask for language support if you need it.

After you fly home

Ask for the product name, lot number and amount in writing, so a doctor at home can help if needed. Contact the clinic with photos at any time, and seek urgent local care straight away for severe pain, skin colour change or any vision change.

Choosing well

How to choose a filler clinic in Seoul

Filler is a medical procedure with a rare but serious risk, so who injects and how they handle complications matter more than the price per syringe. These questions help you compare clinics.

What affects the cost of fillers in Seoul?

The cost depends on the number of areas, the amount of filler (usually counted in syringes), the product and brand, whether a cannula or special technique is needed, and whether a review or dissolving is included. Cosmetic fillers are not covered by Korea's National Health Insurance, and at Hommage Women's Clinic you receive a written quote before treatment.

Your visit

What to expect at your filler appointment

Your doctor

Dr. Kim Hyunbin

Associate Director · Skin & Aesthetic Treatments

Dr. Kim plans fillers by assessing the whole face in proportion, often using modest amounts across a few areas rather than a large volume in one spot. Before any injection, Dr. Kim names the product, explains the warning signs of a vascular complication and confirms that hyaluronidase is on hand.

Associate director dedicated to skin and aesthetic procedures, with extensive experience in lifting, botulinum toxin, fillers and laser treatments.

Read Dr. Kim Hyunbin's profile →

Dermal fillers: frequently asked questions

Filler and injectable treatments

Plan your filler treatment with a doctor

Book a consultation with Dr. Kim Hyunbin in Gangnam. You will see the plan, the product and the risks before any filler is injected.

Hommage Clinic · 4F, Building A, 509 Gangnam-daero, Seoul (near Sinnonhyeon Station) · Mon & Fri 10:00–20:00 · Tue–Thu 10:00–19:00 · Sat 10:00–15:00