PEBBLED CHIN IN SEOUL: MENTALIS BOTOX GUIDE FOR 2026

The chin gets less attention than the jaw, but it is often the giveaway. When you smile or press your lips together and the skin puckers into a lumpy, cobblestone texture, that is the mentalis muscle overworking. Seoul clinics treat this with a small, precise Botox dose that is not the same protocol as masseter Botox for jaw slimming, not the same as a Nefertiti-style neck and jawline lift, and not something a generic full-face price quote will cover. This guide walks through what the treatment is, how much product goes in, what it costs at 2026 Seoul prices, and how first-timers should think about stacking it with the rest of a trip.

WHAT A PEBBLED CHIN ACTUALLY IS

The mentalis is a small paired muscle sitting on the front of the chin bone. Its job is to lift the lower lip and push it forward, which is why it fires whenever you pout, press your lips together to hold back a smile, or drink from a low cup. When the muscle is naturally strong, or when the chin bone is short and the muscle has to work harder to bring the lip forward, the overlying skin gets pulled into a texture that looks like orange peel or a cobblestone road. Dermatologists in Seoul call it 자갈 턱, roughly cobblestone chin, and it is one of the more common cosmetic complaints in patients in their late twenties and thirties.

The texture is muscular, not volumetric. That distinction matters because it drives the treatment plan. If you go into a clinic asking to "smooth the chin" and the doctor immediately reaches for filler, you are in the wrong protocol. Filler is used when the chin is short, projecting the point forward or downward. Botox is used when the surface skin is being crumpled by a busy mentalis. The two treatments sometimes get combined in the same visit, but a true pebbled chin fixes with two tiny injections and around ₩60,000 to ₩150,000 of product, not ₩600,000 of hyaluronic acid.

You can self-diagnose in a mirror. Relax your face, then press your lower lip up against your upper lip without smiling. If the chin surface tents into little dimples and ridges, you are a mentalis Botox candidate. If the chin looks flat but recedes backward compared to your lower lip, you are a chin filler candidate instead. Many people are both, and a good Seoul consultation will map which parts belong to which fix.

HOW SEOUL CLINICS ACTUALLY INJECT IT

Almost every Gangnam and Apgujeong clinic runs the same core protocol. Two injection points, low on the chin, roughly one centimeter apart, placed into the belly of the mentalis rather than up near the lip. Dosing sits between 4 and 8 units total, split evenly. Underdosing is the standard failure mode because injectors are afraid of dropping the lower lip, which is a real risk if the needle drifts upward and the toxin reaches the depressor labii inferioris. A confident chin injector will use 6 units for most patients and 8 for a very strong mentalis, placed deep and low. Anything above 10 units per side is almost always excessive for chin work alone.

Brand choice matters less than placement, but Seoul clinics default to Korean toxins for this area because the price point makes clean touch-ups easy at week two. Botulax and Nabota are the two most common menu options at mid-tier clinics. Innotox, a liquid preloaded version, is popular at higher-end Apgujeong clinics because it does not need reconstitution and tends to spread slightly less, which helps when you are placing units in a small target area near the lip. If you have already had Botox with Allergan brands abroad, a Korean toxin at Seoul prices will feel identical in outcome for a chin dose this small.

WHAT IT COSTS IN SEOUL IN 2026

Chin Botox is a small-area treatment, and the pricing structure reflects that. Most Seoul clinics quote it as an add-on rather than a headline item, which is why you rarely see it advertised on street-facing menus. Expect two price shapes. The first is a flat per-area rate, usually ₩60,000 to ₩150,000, roughly $45 to $115, covering the two injections regardless of exact unit count. The second is per-unit pricing at premium clinics, typically ₩4,000 to ₩8,000 per unit for Korean brands and ₩12,000 to ₩18,000 per unit for Allergan or Xeomin, which lands the same total in a similar range. Cheongdam and Apgujeong prices sit at the top of this band, Sinnonhyeon and Seocho at the bottom.

• 01Sinnonhyeon and Seocho mid-tier: ₩60,000 to ₩90,000 flat, Korean brand toxin, walk-in slots easy to find
• 02Gangnam central: ₩90,000 to ₩130,000 flat or ₩5,000 to ₩7,000 per unit, cleaner English support
• 03Apgujeong and Cheongdam premium: ₩120,000 to ₩180,000 or ₩8,000 to ₩12,000 per unit, often Innotox or Xeomin as default
• 04Add-on to a same-visit masseter or forehead session: ₩40,000 to ₩70,000, since the injector is already gowned up

VAT handling varies. Some clinics quote inclusive, some add 10 percent at the register, and a few offer the foreigner VAT-refund process at checkout. For a small-ticket treatment like this the refund is negligible. The full breakdown of VAT and hidden costs is worth reading before you commit to any package that bundles chin work with larger items, because the smaller treatment is where clinics tend to hide the markup.

WHAT THE FIRST SESSION ACTUALLY FEELS LIKE

You walk in, fill out a short medical form, and sit for a five to ten minute consultation. The doctor will ask you to press your lips together and hold, watch the mentalis fire, and mark two dots low on the chin with a surgical pen. Topical numbing cream is usually applied for 10 to 15 minutes at the injectable-heavy clinics, though many locals skip it since the injections themselves take under thirty seconds total. You will feel a sharp pinch on each side and a slight burn as the product goes in. The whole procedure, from sitting down to walking out, is under half an hour.

Downtime is close to zero. The two injection sites may show a red pinprick and a small bruise for a day or two, easy to cover with concealer. The muscle relaxation kicks in gradually across days 3 to 7, and by day 10 you should see a visibly smoother chin surface when you press your lips together. Peak effect lands around week two and holds for three to four months, with the mid-face injectable-heavy patients often reporting five months on chin work because the muscle target is small and lightly loaded. There is a longer breakdown of what to do in the first two weeks in the post-treatment care guide for injectables.

WHEN TO COMBINE IT WITH OTHER TREATMENTS

Chin Botox on its own is a fine standalone session, but it earns its place as a stackable add-on. The two combinations that come up most often at Seoul consultations are chin Botox plus masseter Botox for jaw slimming, which reshapes the entire lower face over two months, and chin Botox plus a small chin filler placement, which fixes both the surface texture and the underlying projection in the same visit. The second combo is the classic "V-line without surgery" package that Apgujeong clinics quote around ₩700,000 to ₩1,200,000 depending on filler brand.

If you are already booking a broader trip, a good sequencing rule is to place chin Botox on day one along with any other muscular Botox targets, then add volumetric work like chin filler, tear troughs, or cheeks on day two or three. This way the muscle relaxation is starting to settle by the time the filler is placed, and the injector can shape the lower face knowing the mentalis will not fight the filler contour.

HOW LONG DOES MENTALIS BOTOX LAST?

Three to four months is the honest average for most patients, and closer to five for people with a naturally lighter mentalis. The chin muscle sits under thin skin and gets used constantly for speech and eating, but the target area is small and the dose is low, which stretches the visible effect. Most Seoul regulars retreat twice a year rather than quarterly, waiting until the pebbling starts to reappear before rebooking rather than sticking to a rigid calendar.

IS CHIN FILLER A BETTER OPTION?

Only if your chin is short or receding. Filler adds projection and length. It does not smooth surface texture in a muscular puckering pattern. If you look in the mirror and your chin already sits at a normal projection but crumples on lip pressure, filler will make the crumple worse by adding a larger target for the mentalis to squeeze. A candid Seoul injector will tell you this rather than upsell. If a clinic pushes filler for a clearly muscular pebble pattern, walk out and try another one.