Illustrative imageEye cream · home care
Easy, no downtime
Can't reach fat that has been pushed forward
Board-certified dermatologists · AUVEL Clinic · BELLUTI
Belluti
Belluti — non-surgical under-eye bag laser in SeoulUnder-eye bags.
Does it have to be surgery?
If the fat under your eyes bulges only slightly, try this before surgery — Belluti, a 5-minute non-incision treatment using a diamond-particle patch and laser.
If the fat under your eyes bulges only slightly, try this before surgery — Belluti, a 5-minute non-incision treatment using a diamond-particle patch and laser.
Sound familiar?
Do mornings like these sound familiar?
Illustrative image
Illustrative image
Illustrative imageIf surgery still feels like too much, read on.
The cause
Under-eye fat doesn't appear — it gets pushed forward
There is fat under the eyes to begin with, held in place by a thin membrane (the orbital septum).
With age, this membrane and the ligaments around it weaken, so the fat is pushed forward — creating a bulge and a shadow below it.
Meanwhile, the ligament attached to the bone stays put, so the groove between the bulging fat and the ligament (the tear trough) deepens. That's why it isn't just about removing fat — the membrane, ligaments and skin all need to be looked at together.
- The membrane holds the fat firmly
- The membrane thins and stretches
- The fat pushes forward and casts a shadow
Options
The options so far — and the gap in between
For under-eye fat, these were the choices. But there was a gap: under-eyes where surgery feels like too much, yet creams and fillers don't help.
Illustrative image
Illustrative imageFiller
Fills hollow areas
Not suited to bulging fat
Illustrative imageStandard laser
Good for texture and pigmentation
Doesn't reach under-eye fat
Before surgery · the gap it fills
Belluti
Reaches the membrane, ligaments and fat layer with shock waves — no incision
For under-eyes where the fat bulges only slightly
Illustrative imageFat repositioning surgery
Most definitive when the bulge is large
Involves an incision and recovery time
The key isn't the laser — it's the patch
- 1064nm
- Q-switched Nd:YAG laser
- About 5 min
- From patch to laser (3–5 min per manufacturer)
- 0
- Incision · anesthesia
- Black diamond + gold patchTiny particles in the patch capture the laser light. The gold particles amplify that energy
- Light → shock waveThe captured light turns into a shock wave (laser-induced shock wave) instead of heat
- Compression lensGently presses and holds the skin so the shock wave travels straight into the under-eye area
- Official name
- BELLUTI
- Manufacturer
- SIMFLE STICK (Korea)
- Components
- Dedicated patch · compression lens · 1064nm laser
- Principle
- Laser-induced shock wave (LISW)
- Patch
- Shaped to the under-eye curve · single-use
- Main area
- Under the eyes
The moment laser light becomes a shock wave
When the laser light hits the diamond particles, the area around each particle expands in an instant and tiny bubbles burst. That force becomes the shock wave. Here it is in the manufacturer's test footage.
- Black diamond and gold particles in the patch absorb the 1064nm laser light
- Within nanoseconds the area around each particle expands rapidly, tiny bubbles burst, and a shock wave forms
- Through the compression lens, the shock wave reaches the membrane, ligaments and fat layer without burning the skin surface
How it works
Four things the shock wave does under the eye
Membrane · ligamentsGives mechanical stimulation to the weakened orbital septum and surrounding ligaments, helping the support that holds the fat back
FatWorks toward reducing the size of fat cells rather than bursting them
SkinSupports collagen production, addressing fine lines and firmness under the eyes
CirculationSupports micro-circulation and lymph flow, helping with puffiness and shadows
Sources: SIMFLE STICK Belluti product brochure (2026) · research on Piezo1, which turns pressure into cell signals (Lu et al., EMBO J 2022, among others). Mechanism descriptions are based on manufacturer materials, and results vary by person.
The research behind it
- Lu et al. · EMBO Journal 2022 — mechanical stimuli such as shock waves open the Piezo1 channel in cells and switch on regeneration signals
- Byun et al. · Int J Mol Sci 2024 — Piezo1 activation increases collagen synthesis in aged dermal fibroblasts
- Kuehne et al. · J Invest Dermatol 2021 — the role of Piezo1 in skin fibrosis and tissue remodeling
- Nagahara · Analytical Chemistry 2011 — the principle of generating shock waves with a laser (laser-induced shock waves)
vs. surgery
Belluti and fat repositioning surgery, side by side
Repositioning surgery
Consult · testsAnesthesiaIncision · surgeryRecovery period
Recovery period neededBelluti
AssessmentPatch · lens5-min treatment
Most return the same day| Belluti | Repositioning surgery | |
|---|---|---|
| Incision | None | Yes |
| Anesthesia | None | Surgical anesthesia |
| Procedure time | About 5 min | Surgery time required |
| Sessions | 3 sessions, 3 weeks apart recommended | One surgery |
| Recovery | Redness and swelling for a few days | Explained at consultation |
| Back to daily life | Usually the same day | Recovery period needed |
| Best suited to | Slightly bulging fat | Large bulge or sagging |
| Scarring | None | Depends on incision site |
If the bulge is large, we'll tell you honestly that surgery may be the better fit.
Send one photo of your under-eyes and we'll tell you whether it looks like a surgery case or a Belluti case
Send a photo and we can guide you before your visit. The final decision is made at your consultation.
Your type
3-second check — what kind of under-eye do you have?
Question 1 of 3
Are your under-eyes puffier when you wake up?
This is a self-check. An accurate diagnosis is made by a dermatologist at your consultation.
3 common misconceptions about under-eyes
The visit
In and out in under an hour
From assessment to heading back out, it fits into one short visit — easy to slot into a trip. No anesthesia, and you can freshen up afterwards before you leave.
Arrive · doctor's assessment
Cleanse · remove makeup
Dedicated patch applied · gel
Compression lens · laser (about 5 min from patch)
Patch removed · soothing
Back on your way
- About 5 min
- From patch to laser
- 3 sessions
- 3 weeks apart recommended (per manufacturer)
- 3–4 months
- How long one session's effect lasts (manufacturer data · varies by person)
Message us your dates in Seoul and we'll check available times
Send a photo and we can guide you before your visit. The final decision is made at your consultation.
The next few days
Illustrative image
Illustrative image
Illustrative image
Illustrative imageRecovery varies by person.
When causes are mixed, we plan them together
Illustrative image
Illustrative image
Illustrative imageIf this mix sounds like your under-eyes, ask us
If surgery is right for your under-eyes, we'll recommend surgery.
How AUVEL Clinic practicesDoctors
For under-eyes, see a dermatologist who can tell the causes apart
Fat, hollowness or pigment — identifying the cause first is what changes the result.
Two board-certified dermatologists see patients at AUVEL Clinic, and both can consult in English.
AUVEL Clinic · Board-certified dermatologist
Dr. Ko Young-wook Medical Director
Diagnoses and performs Belluti personally
Lifting · RenuvionUnder-eye · BellutiFiller ligament lifting
- Board-certified dermatologist · Dermatology residency, Hanyang University Hospital
- Member, Korean Dermatological Association · Korean Association of Dermatologists
- Member, Korean Society for Skin Anti-aging · Korean Society for Clinical Dermatologic Treatment
- Current) Medical Director, AUVEL Clinic
AUVEL Clinic · Board-certified dermatologist
Dr. Song Chang-hwa Director
Skin texture · firmnessRejuran · skin boostersUnder-eye · Belluti
- Board-certified dermatologist · M.S. in Dermatology, Hanyang University College of Medicine
- Member, Korean Dermatological Association · Korean Association of Dermatologists
- Current) Director, AUVEL Clinic
Book a consultation
12th floor, Sinsa — a clinic built around one patient at a time
- 2
- board-certified dermatologists
- 1:1
- private consultation and treatment rooms
- English
- consultation on WhatsApp
Genuine patches, opened in front of you
- We use only officially supplied devices and patches
- A new patch is opened in front of you
- Our certificate of genuine adoption is displayed at the clinic
Message us
- Message us — tell us your concern and your dates in Seoul, and send a photo if you like
- Doctor's consultation — we assess your type and suggest another option if Belluti isn't the right fit
- If it fits, treatment can be done the same day
Frequently asked questions
Does it really work without surgery?
If the fat under your eyes bulges only slightly, it can be treated without an incision. If the bulge is large, surgery may suit you better — we'll tell you honestly at your consultation.
Does it hurt?
It's done without anesthesia. You may feel brief sensations over the patch, and how much you feel varies by person.
How long does the treatment take?
About 5 minutes from applying the patch to the laser (3–5 minutes per the manufacturer). Including the assessment, cleansing and soothing, the whole visit fits in under an hour.
Can I go straight back to sightseeing or meetings?
Most people can go about their day, but there may be some redness or swelling.
Will I bruise?
Pinpoint bleeding may be visible for a few days. If you have an important event or photos planned, let us know in advance.
How many sessions do I need?
The manufacturer recommends at least 3 sessions, 3 weeks apart. After the first, you'll notice a change as the puffiness goes down, and changes in the membrane and skin continue as sessions add up. Your doctor will advise the exact number after seeing your under-eyes, and can help plan sessions around your trips to Seoul.
How long do the results last?
According to the manufacturer, one session's effect lasts about 3–4 months, and this varies by person. Maintenance is planned together at your consultation.
Can I have it after fat repositioning surgery?
The manufacturer also describes using it after repositioning surgery to care for under-eye firmness and fine lines. It depends on your post-surgery condition, so we check at your consultation.
How is it different from a standard laser?
A standard laser turns light into heat and works on the skin's surface layers. With Belluti, the patch turns light into a shock wave that travels to the deeper membrane, ligaments and fat layer without burning the surface.
How is Belluti different from under-eye fat repositioning surgery?
Repositioning surgery involves an incision to move the fat. Belluti reaches the membrane, ligaments and fat layer with a patch and laser shock waves, without an incision. If the bulge is large, surgery may be the better fit, and we'll tell you honestly at your consultation.
Does Belluti help with dark circles?
It's for dark circles caused by fat pushed forward and casting a shadow. Brown pigment and blue vascular types have different causes, so we recommend treatment suited to them.
Is it for under-eye hollows (tear troughs)?
If a sunken groove is the main cause, filler or similar may come first. Under-eyes with both bulging fat and hollowness are planned together.
How much does Belluti cost?
It depends on the area and extent. Message us and we'll let you know.
3 minutes' walk from Sinsa Station (Line 3 · Shinbundang) · 12F, 138 Dosan-daero, Gangnam-gu, Seoul, Republic of Korea · valet parking
Mon–Fri 10:00–20:00 · Sat 10:00–16:00 · closed Sundays and Korean public holidays (KST)