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Aging · Under the chin

Double Chin: Causes and Treatment Options in Seoul

Updated November 2026
Treatment room with lifting device at Shinebom Clinic, Jamsil, Seoul

The short answer

A double chin can come from fat under the chin, loose skin, a small or receding jaw, or a mix, and which one you have decides the treatment. At Shinebom Clinic in Jamsil, Seoul, a doctor may suggest Ulthera, InMode or fat-dissolving contour injection after examining the area in person.

Key facts

  • Three causes: fat, skin laxity, jaw structure
  • Ulthera: ultrasound to the SMAS layer, used for double chin
  • InMode: suction plus RF; repeat at 1 to 3 months if needed
  • Contour injection: fat-dissolving; repeat at 2 weeks
  • Pricing: quoted after consultation

What is actually under your chin?

Fullness below the jaw is not always fat. It can be a pad of fat above the neck muscle, a soft or lax layer of skin, a short or set-back chin that gives the neck less definition, or all three. Weight gain, genetics and aging each play a part. This is why two people with the same visible bulge may need entirely different plans.

How does the doctor tell them apart?

At Shinebom Clinic the doctor examines you from the side, gently pinches the area to judge how much is fat, and checks skin tightness and chin projection. Where relevant, they will say plainly if your concern is mostly skeletal and a device is unlikely to change it. The plan is tailored to your face shape, not a template.

Which Shinebom treatments may help?

  • Ulthera uses focused ultrasound at the SMAS layer and is listed for double chin; repeat at 6 months if needed.
  • InMode combines suction and radiofrequency and is also used for double chin and deep cheek areas.
  • Facial contour injection is a fat-dissolving injection aimed at localized fullness.
  • Chin and jawline filler may help if a small chin is part of the picture.

What results are realistic?

Fat-reducing and tightening treatments typically act gradually and may need more than one session. Swelling, redness and bruising generally settle in 1 to 2 weeks. After contour injection, contact the clinic if dents appear. The exact number of visits is set by your doctor.

When to see a doctor

A sudden swelling under the jaw, a firm lump or a neck mass should be checked by a doctor before any cosmetic plan. Pregnancy is generally a reason to wait. See the fat injection aftercare guide for recovery advice.

Frequently asked questions

Can I lose a double chin by dieting?

Weight loss can reduce it for some people, but under-chin fat and skin laxity often remain. A doctor can tell you which applies.

Will fat-dissolving injections leave a mark?

Swelling and bruising can occur and generally settle within 1 to 2 weeks. You can wash and apply makeup right away, and the patch comes off next day.

How soon can I repeat treatment?

It depends on the method: contour injection at 2 weeks, InMode at 1 to 3 months, Ulthera at 6 months, if the doctor advises it.

Related pages

General information from Shinebom Clinic, not personal medical advice. Results and recovery vary between individuals, and all procedures carry possible risks and side effects. A doctor will confirm what suits you at consultation.

Bloom yourself, in your own way

Tell us your skin concerns and dates in English. Shinebom Clinic is a 3-minute walk from Jamsil Station, exits 8 and 9.