Concern

What causes a double chin?

A double chin, or submental fullness, is a soft area of bulk beneath the chin and along the jaw. It is extremely common, and it is not only about body weight. Many slim people have one because of genetics or jaw shape.

Submental fat: a localized pocket of fat under the chin that can persist despite diet and exercise.
Skin laxity: with age, collagen declines and the skin and supporting tissue under the jaw loosen and descend.
Genetics and anatomy: a short or set-back chin, a low hyoid bone or a small jaw can make fullness look more prominent.
Swelling and fluid: salty food, alcohol, poor sleep and hormonal changes can temporarily puff the area.
Posture: frequent looking down at phones can emphasize the fold, and over time may contribute to the look of laxity.

How is the type of double chin diagnosed?

The treatment that works depends on what is under the skin, so Re:berry begins with diagnosis rather than a package. During consultation the doctor will usually:

Pinch the area to judge how much is fat versus skin.
Ask you to tilt your head and look up and down to see how the tissue moves.
Check the jawline in profile for laxity, jowls and chin projection.
Look at the masseter muscle, since a wide jaw can change how the area reads.
Discuss weight history, lifestyle and how quickly you want to see change.

Four common patterns

Fat-dominant: thick, pinchable fullness with fairly firm skin. Fat-targeting options tend to fit.
Laxity-dominant: thin skin that folds or hangs, often with early jowls. Lifting and tightening are prioritized.
Mixed: both fat and laxity. This is the most common pattern in adults over 30.
Structural: a retruded chin makes the area look full. Volume or contour support may be discussed.

Which Re:berry treatments are used for a double chin?

Berry Slim contour injection

Re:berry's contour injection program targets small, defined pockets of fullness with a series of injections, often spaced one to two weeks apart. It suits fat-dominant patterns. See Contour Injection (Berry Slim).

ONDA microwave contouring

ONDA uses Coolwaves microwave technology designed to act on fat tissue while protecting the skin surface. It is non-invasive and often paired with Berry Slim for a broader contour effect.

Ulthera and Ultherapy Prime

Micro-focused ultrasound reaches the deeper support layer and is FDA-cleared for lifting tissue under the chin. It is a strong fit when laxity drives the fold. Results build over two to three months.

Thermage FLX and Sofwave

These devices tighten skin and encourage collagen, which can help a softened jaw outline look crisper, especially when combined with fat-focused treatment.

Thread lifting

Where laxity is more advanced, threads such as Dooth or Mint may be considered to reposition tissue along the jawline.

Why combinations often work better

Most adult double chins involve more than one cause. Reducing fat without addressing loose skin can leave the area looking slack, while lifting alone may not shift a stubborn fat pocket. A combination plan treats each layer in a logical order. A typical sequence might reduce fullness first, then tighten and lift, but your doctor will set the order. Our guide on ONDA for double chin shows how one option fits into a broader plan.

What is a realistic timeline?

Week 0–1: mild swelling or tenderness after injections; little to none after most devices.
Weeks 2–6: gradual softening of fullness as a contouring series progresses.
Months 2–3: lifting and tightening effects from ultrasound or RF become more visible.
Maintenance: stable weight, sleep and posture help preserve results; some devices are repeated yearly.

Results vary by individual, and improvement is usually gradual rather than dramatic.

Double chin in men versus women

Men often have thicker skin and a heavier fat pad under the chin, while women more often notice early laxity along the jawline in their late 30s and 40s. Men also tend to want a sharper, more angular outline, which can change how treatments are dosed and combined. These are general patterns only, and the plan always follows your individual diagnosis.

What can I do at home?

Home habits will not remove a genetic fat pocket, but they can reduce swelling and support results. Limit late-night salty food and alcohol, sleep well, keep a stable weight and be mindful of screen posture. Neck and jaw exercises have limited evidence but are low-risk.

Is surgery ever the better choice?

For significant skin excess or very large fat volume, surgical options such as liposuction or a neck lift may give a more definitive result. An honest consultation should tell you if non-surgical options are unlikely to meet your goals.

Booking a double chin consultation in Hongdae

Pricing depends on the treatments, areas and plan, and is confirmed in writing at consultation. For the address and hours, see our Location & Hours page, and book via our Booking page. If you are visiting Seoul, share your dates so the plan can fit your stay. For a quick summary, read how to get rid of a double chin without surgery.

Can a slim person have a double chin?

Yes. Genetics, a small or set-back chin, a low hyoid bone and skin laxity can all create submental fullness regardless of body weight. This is why diagnosis matters: the cause in a slim person is often structural or laxity-related rather than fat, which changes which treatments are likely to help.

How many sessions does double chin treatment take?

It depends on the plan. Contour injections are usually a series spaced one to two weeks apart, ONDA is often done in several sessions over weeks, and ultrasound lifting is usually a single session repeated about yearly. Your doctor will outline a schedule that fits your concern and, if relevant, your travel dates.

Will my double chin come back after treatment?

Results can be long-lasting when weight stays stable, but aging continues and skin keeps changing. Significant weight gain can enlarge remaining fat cells, and laxity naturally progresses. Many patients maintain results with healthy habits and periodic lifting or tightening sessions, as recommended by their doctor.

Does jaw Botox help a double chin?

Not directly. Jaw Botox relaxes the masseter muscle at the side of the jaw, which slims a wide lower face. It does not reduce fat under the chin. Some patients benefit from both, but only when their face has both muscle-driven width and submental fullness.