Surgery · Neck Anatomy

Subplatysmal Deep Neck Fat

The fat that sits beneath the neck muscle

Gangnam, Seoul | Board-certified plastic surgeon, Dr. Jonghwan Choi
KHIDI-registered for international patients · Apgujeong Rewind

Deep Neck Fat Deep Neck Fat Deep Neck Fat Deep Neck Fat 
Anatomy

What is subplatysmal fat

What is subplatysmal fat, and where does it sit?

The short answer

Subplatysmal fat is the fat that lies beneath the platysma, the thin, broad muscle that runs over the front of the neck from the jaw line downward. It sits deeper than the ordinary fat just under the skin, in the region under the chin. Rewind calls it grape-cluster fat because it clings to the underside of the muscle in granules. Because it lies under the muscle, a suction cannula working in the layer above cannot reach it, and it has to be removed directly, piece by piece, through a short incision beneath the chin.

The description of this fat and of its removal comes from Rewind's Korean surgical pages for grape-cluster fat removal and for double-chin muscle tightening.

The distinction matters because the two fat layers under the chin behave differently. Surface fat can be reduced by suction, while deep fat stays where it is after suction, and that explains why some necks remain full after an otherwise successful liposuction. Knowing which layer holds your fullness tells you which operation, if any, makes sense.

Surgeon working under magnification during removal of fat beneath the neck muscle
Fig. 01 — Deep neck fat is reached under the muscle and removed by hand
Cases

Before & After

Two profiles in which fat beneath the platysma was part of the plan

These cases show what emptying the deep compartment contributed to as part of a larger plan. Neither was deep fat removal alone: both included suction above the muscle and platysma work, and one also included forehead surgery. They illustrate the anatomy discussed on this page more than they measure any single step.

Rewind patients, side view of the neck

Before — subplatysmal fat removed along with double-chin liposuction and deeper platysma work After — subplatysmal fat removed along with double-chin liposuction and deeper platysma work BEFOREAFTER
profile A
Subplatysmal fat removed along with double-chin liposuction and deeper platysma work
Individual results may vary.
Before — deep fat beneath the platysma extracted in a session that also included double-chin liposuction, platysma work, forehead lift and forehead reduction After — deep fat beneath the platysma extracted in a session that also included double-chin liposuction, platysma work, forehead lift and forehead reduction BEFOREAFTER
profile B
Deep fat beneath the platysma extracted in a session that also included double-chin liposuction, platysma work, forehead lift and forehead reduction
Individual results may vary.

Photographed at Rewind in matching conditions and published with the patient's consent. Individual results may vary. Operating beneath the platysma carries risks of bleeding, infection, lasting swelling or bruising, asymmetry, altered sensation under the chin, injury to nerves near the jaw line and scarring.

Layers

Skin to deep compartment

The layers under the chin, from skin to the deep compartment

Between the skin under your chin and the deeper structures of the neck lie several distinct layers. Rewind's surgical pages name each of the ones below, and each responds to a different surgical step.

layer 01
Subcutaneous fat
The layer directly beneath the skin and above the muscle. It is the fat liposuction reaches, and it is the first thing Rewind softens and suctions in any neck plan.
layer 02
The platysma
A thin muscle sheet across the front of the neck. With age it stretches, and the border between jaw and neck softens. It is the dividing line between superficial and deep fat.
layer 03
Grape-cluster fat
Rewind's name for the granules of fat stuck to the underside of the muscle. They are the subplatysmal fat this page describes, and the clinic removes them one at a time.
layer 04
Inner fat and the gland
Rewind's muscle-tightening page also describes fat on the inner side of the muscle and, beneath the jawbone, the walnut-sized submandibular gland, which can protrude below the jaw line. The gland is not fat and is treated separately.

The operation that removes the deep deposit is set out on the deep neck lift page, and the suction of the layer above it on double-chin liposuction. A comparable deep pad in the cheek is covered under buccal fat removal.

Assess

Superficial or deep

How surgeons tell superficial from deep neck fat at consultation

No single test settles the question, so the assessment combines several observations. Rewind states that depth is judged by hand before a plan is made, and the list below describes what that judgement draws on.

01History

What an earlier liposuction changed

A neck that stayed full after competent suction points towards fat the cannula could not reach. Rewind lists this as the first reason someone is considered for deep fat removal.

02Pinch

How much can be gathered between the fingers

Fat above the muscle moves with the skin and can be gathered. Fullness that remains once that layer is accounted for is more likely to sit deeper, under the platysma.

03Tension

What changes when the neck muscle tightens

Asking the patient to tense the neck brings the platysma into view. Fullness that seems held behind the tensed muscle suggests a deeper deposit, and visible cords show where the muscle has slackened.

04Gland

Whether a firm swelling belongs to the gland

A firmer, rounded fullness below the jaw line may be the submandibular gland. Rewind treats it as a separate finding with its own listing, because removing fat leaves it unchanged.

05Imaging

Whether measurement adds anything

Researchers have used ultrasound to measure subplatysmal fat thickness before neck surgery and to predict how much will be excised. Rewind does not publish measurements of its own, and the examination is the basis of its plans.

06Structure

Whether the chin itself shapes the profile

A structurally short chin can crowd the tissue beneath it. Rewind lists this among the reasons a neck looks full, and it limits what fat removal can achieve, because the bone is left as it is.

Dr. Jonghwan Choi indicating the jaw line to a patient at consultation
Fig. 02 — Depth is judged by hand before any plan is written
Rewind

The anatomical limit

Why liposuction cannot remove deep neck fat

The limit is anatomical. A liposuction cannula passes through the fat layer above the platysma, and the muscle sheet lies between it and the deposit underneath. Rewind states directly that this fat cannot be removed by liposuction.

01The barrier

The platysma lies between the cannula and the fat

Suction works in the plane above the muscle. The deep granules sit on the other side of it, so the cannula passes over them however thorough the suction is.

02Adhesion

The deposit clings to the muscle

Rewind describes the fat as stuck to the muscle like grapes on a stem. It has to be separated and lifted out under direct vision, and the clinic works from the muscle layer inward to do so.

03Aftermath

Emptying the space leaves the muscle to be tied

Once the deep fat is out, the stretched platysma is bound so that it carries tension. Published work has long linked untreated muscle after submental suction with band deformity, which is part of why the muscle is not left as it was.

Consultation room at Rewind Plastic Surgery, Apgujeong
Fig. 03 — The layers are explained before surgery is discussed
Route

The surgical route

How deep neck fat is reached in Rewind's theatre

The operating surgeon and theatre team at Rewind during neck surgery

Fig. 04 — The operating surgeon and team in Rewind's theatre

Recovery room at Rewind Plastic Surgery

Fig. 05 — Where the compression dressing is checked ahead of discharge

Rewind is based on the fourth and fifth floors of the Richro Building in Apgujeong, Gangnam, and performs this operation in its own theatre. Surgical consultations are available on Monday, Tuesday, Wednesday and Friday from 10:00 to 19:00, and on Saturday from 10:00 to 16:00. The route to the deep compartment is short and follows a fixed order.

Incision beneath the chin, about 2 cm
Surface fat softened and suctioned first
Deep space beneath the platysma opened
Granules separated from the muscle one by one
Inner fat addressed where present
Stretched platysma tied back
Gland reduced only on a separate finding
Wound closed and dressing applied
Dr. Jonghwan Choi, board-certified plastic surgeon at Rewind Plastic Surgery

Board-certified plastic surgeon

Korean specialist certification in plastic surgery, ten peer-reviewed papers in journals including the Journal of Craniofacial Surgery, and membership of the Korean Society of Plastic and Reconstructive Surgeons. International patients: KHIDI registration M-2025-01-08-09288.

Listing

How it is listed

How removal of subplatysmal fat is listed at Rewind

Because the deep fat is reached through the same line as the suction, the clinic lists its removal as an addition to a suction plan. Other lines join only where the examination finds the muscle or the gland involved.

Subplatysmal fat removal, as an additionThe deep compartment; the compartments covered are confirmed at examination
₩1,500,000
Chin and jaw line liposuctionThe superficial layer, and the plan the deep line is added to
₩1,760,000
Liposuction with platysma tighteningSurface fat and the muscle, listed together as one operation
₩5,390,000
Submandibular gland reductionOnly where the gland, and not fat, is part of the fullness
₩1,600,000

All listed figures include the anaesthetic fee, with VAT charged on top. The type of anaesthesia and the time in theatre are not published for this operation and are confirmed in person.

Fit

Signs

Signs that suggest subplatysmal fat, and signs that point to another cause

Signs consistent with deep fat

  • Fullness under the chin that remained after liposuction
  • A double chin that stays even after weight loss
  • A soft jaw border together with a loosened platysma
  • Fullness that returned after earlier facial contouring surgery

Signs that point elsewhere

  • Fat that gathers easily between the fingers, suggesting the superficial layer
  • Loose, hanging skin with little volume beneath it
  • A firm, rounded swelling below the jaw line, which may be the gland
  • A short chin whose bone shape, more than fat, crowds the neck
  • General conditions such as bleeding disorders, pregnancy or infection, which postpone surgery whatever the cause
After

After removal

What follows once subplatysmal fat has been taken out

Removing the deep fat opens a space under the muscle, and the first month is about letting the tightened muscle and the tissue around it settle. Rewind's sheets for facial liposuction and for the muscle work apply together.

First week
Compression over the space
A compression dressing is worn for a week to support the emptied compartment, and it is neither pressed nor massaged. Bruising and swelling may appear, while daily routines can generally resume early.
Two weeks
No heat, no alcohol
Sauna, steam rooms, alcohol and smoking are avoided for at least two weeks, as is massage of the area, while the tied muscle settles.
One month
Neck movement kept gentle
Sharp downward movements of the chin and forceful turning of the head are avoided for a month, along with strenuous exercise. Cold compresses help with swelling in the early days.
Longer term
Durability with variation
Rewind records that results can last more than five years, with individual variation. The scar beneath the chin is kept out of the sun while it matures.

Possible complications of deep neck surgery include bleeding, infection, extended swelling or bruising, an uneven contour, numbness or altered feeling under the chin, injury to nearby nerves along the jaw line, and a scar that heals differently from expectation. No outcome can be promised, and results vary by individual.

Doctor

Professional

At Rewind, one board-certified plastic surgeon carries every case — from the first consultation to the final follow-up. Because a face is a story, and a story deserves a single author.

Dr. Jonghwan Choi, board-certified plastic surgeonRewind,
Dr. Jonghwan Choi presenting at an academic session
Fig. 06 — Academic presentation, lifting session

Rewind's Doctor

Dr. Jonghwan Choi Medical Director

One surgeon, from the first
consultation to the last follow-up.

A board-certified plastic surgeon devoted to anti-aging lifting — with the precision and restraint built through years of craniofacial practice.

Board-certified plastic surgeon (Plastic Surgery)
10 peer-reviewed publications
Medical Director, Rewind Plastic Surgery
Korean Society of Plastic & Reconstructive Surgeons
Former chief director, Apgujeong Y&T Plastic Surgery
Korean Society for Aesthetic Plastic Surgery
J Craniofac Surg · JKMS · Arch Craniofac Surg
Korean Cleft Palate-Craniofacial Association
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Ask

Questions

Subplatysmal fat: anatomy questions answered

Which layer of the neck holds subplatysmal fat?
It lies beneath the platysma, the thin muscle across the front of the neck, in the area under the chin. The ordinary fat you can pinch sits above that muscle. Rewind describes the deeper deposit as granules clinging to the underside of the muscle, and calls it grape-cluster fat.
Why can liposuction not remove deep neck fat?
A liposuction cannula works in the fat layer above the platysma, and the muscle sheet separates it from the deep deposit. The granules also cling to the muscle. Rewind therefore removes them directly, one piece at a time, after opening the space beneath the muscle through the same short incision.
How do surgeons tell superficial from deep neck fat at consultation?
The surgeon combines several findings: what an earlier liposuction changed, how much fat can be gathered between the fingers, how the neck looks when the muscle is tensed, and whether a firmer swelling may be the gland. Rewind makes this judgement by hand before proposing any plan.
Is subplatysmal fat the same thing as a double chin?
Not exactly. A double chin describes visible fullness, which can come from fat above the muscle, fat beneath it, a slack muscle, the gland or the shape of the chin. Subplatysmal fat is one of those causes, and it is often present alongside one or more of the others.
Does losing weight reduce deep neck fat?
Rewind lists a double chin that persists after weight loss among the reasons people consider its neck operations. How much an individual's deep fat changes with weight is not something the clinic publishes, so the examination assesses what is present at the time of your consultation.
Is the gland under my jaw a kind of fat?
No. The submandibular gland is a walnut-sized organ beneath the jawbone that produces saliva. When enlarged it can protrude below the jaw line and look like fullness, but removing fat leaves it unchanged. Rewind lists gland reduction separately and adds it only on that finding.
What does removing subplatysmal fat add to the cost?
It is listed as an addition at ₩1,500,000 to a chin and jaw line liposuction plan, which is itself listed at ₩1,760,000. The anaesthetic fee is included in listed figures, and VAT is charged in addition to them.
Is a scan needed to find deep neck fat?
Rewind bases its plans on examination and does not publish imaging as a routine step. Research has used ultrasound to measure subplatysmal fat thickness before surgery, and your surgeon can explain whether any test would change the plan for your own neck.
Booking

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Scientific evidence

Research on the deep neck compartment and its surgery

These studies describe other surgeons' patients. Kim measures the deep compartment by ultrasound before surgery, Bravo reports a two-plane reduction of the neck, Kamer explains the band deformity that can follow suction, and Aldihani reports a large submental liposuction series under local anaesthesia. Rewind does not publish its anaesthesia, which is confirmed at examination.