A double chin — clinically known as submental fullness — is one of the most common aesthetic concerns for both men and women. It can be stubbornly resistant to diet and exercise because the submental fat pad is largely determined by genetics rather than body weight. Whether your double chin is caused by excess fat, loose skin, or a combination of both, today's treatment options offer effective solutions ranging from non-invasive procedures to surgical contouring.

What Causes a Double Chin

Genetics

Genetics is the single biggest predictor of submental fullness. If your parents or grandparents had a double chin, you're significantly more likely to develop one — even at a healthy body weight. Inherited factors include the size and distribution of the submental fat pad, skin elasticity, jawbone projection, and hyoid bone position.

Weight Gain

Excess body fat increases fat storage throughout the body, including the submental area. However, many people with double chins are not overweight, and many overweight people don't develop prominent submental fullness. Weight is a contributing factor but not the sole determinant.

Aging

Age-related changes compound submental fullness through several mechanisms:

Skin laxity: Loss of collagen and elastin causes the neck skin to sag, creating fullness even without excess fat
Platysma muscle laxity: The thin neck muscle loosens and separates, contributing to a less defined jawline
Bone resorption: The mandible recedes with age, reducing the skeletal support that maintains a crisp jaw-neck angle

Posture

Poor neck posture — particularly the forward head position common with computer and phone use — can weaken the platysma and submental muscles, contributing to a less defined chin profile over time.

Non-Surgical Treatments

Kybella (Deoxycholic Acid)

Kybella is the only FDA-approved injectable treatment specifically designed to reduce submental fat. Deoxycholic acid is a naturally occurring bile salt that permanently destroys fat cell membranes when injected into the submental fat pad.

Treatment protocol:

Multiple small injections across the submental area per session
Two to four treatment sessions spaced 4–6 weeks apart
Each session takes approximately 15–20 minutes
Results are permanent — destroyed fat cells cannot regenerate

What to expect:

Significant swelling for 3–7 days after each treatment (temporary "bullfrog chin")
Bruising, numbness, and tenderness are common
Results become visible as swelling resolves and fat cells are metabolized over 4–6 weeks
Most patients see optimal results after two to three sessions

Best candidates: Patients with moderate submental fat and good skin elasticity. Kybella does not tighten loose skin — if laxity is the primary concern, skin tightening treatments may be needed in addition.

CoolSculpting (Cryolipolysis)

CoolSculpting uses controlled cooling to freeze and destroy fat cells beneath the chin. The CoolMini applicator is specifically designed for the small submental area.

Treatment details:

Single 45-minute session with the applicator suctioned beneath the chin
Fat cells crystallize, die, and are gradually eliminated by the body
Results appear over 2–4 months
Typically reduces submental fat by 20–25% per session
One to two sessions recommended

CoolSculpting is less painful than Kybella and involves minimal downtime, but each session produces a more modest fat reduction.

Radiofrequency Treatments

For double chins with a significant skin laxity component, radiofrequency devices can tighten the skin while providing modest fat reduction:

Morpheus8: Combines microneedling with RF to tighten skin and reduce fat in the submental area. The adjustable needle depth can target both superficial skin tightening and deeper fat reduction.
ThermiTight: A minimally invasive RF device where a probe is inserted beneath the skin to deliver targeted heating. Provides both fat reduction and skin tightening.

Ultherapy

Microfocused ultrasound provides skin tightening beneath the chin by targeting the deep tissue layers. While Ultherapy doesn't destroy fat cells directly, it can improve the skin laxity component of a double chin and enhance jawline definition.

HIFU (High-Intensity Focused Ultrasound)

HIFU devices deliver focused ultrasound energy that can both tighten skin and reduce localized fat deposits. The submental area is a popular treatment zone. Multiple sessions are typically recommended.

Surgical Options

Submental Liposuction

Liposuction of the submental area is one of the most effective and efficient methods for eliminating a double chin. A small cannula inserted through a tiny incision beneath the chin suctions out excess fat, creating a dramatically improved jawline profile.

Advantages:

Single procedure with immediate and significant results
Recovery takes 1–2 weeks (compression garment worn for 1–2 weeks)
Results are permanent (removed fat cells don't return)
Can be performed under local anesthesia in many cases

Considerations: Liposuction removes fat but does not tighten skin. In patients with significant laxity, combining liposuction with a neck lift provides the most comprehensive result.

Neck Lift

A neck lift addresses all components of a double chin — excess fat, loose skin, and platysmal muscle laxity. The surgeon tightens the platysma, removes excess skin, and contours the submental fat pad through incisions behind the ears and sometimes beneath the chin.

A neck lift provides the most dramatic and longest-lasting improvement for moderate to severe double chins, particularly when skin laxity is a significant contributing factor.

Chin Implant or Augmentation

In some cases, a weak or recessed chin contributes to the appearance of a double chin by reducing the angle between the chin and neck. A chin implant or jawline filler can improve the chin-neck profile by enhancing projection, creating a more defined jawline without fat removal.

Exercises and Lifestyle Strategies

While exercises and lifestyle changes cannot eliminate a genetic double chin, they can provide supportive benefits:

Posture improvement: Maintaining proper head and neck alignment strengthens the submental muscles and creates a more defined profile. Practice chin tucks and avoid prolonged forward head posture.
Overall fitness: If excess body fat is contributing to submental fullness, weight loss through a balanced diet and regular exercise will reduce fat throughout the body, including the submental area.
Facial exercises: While the evidence is limited, targeted neck and jaw exercises may modestly improve muscle tone beneath the chin. They should be viewed as supportive rather than curative.
Chewing gum: Some anecdotal evidence suggests that regular gum chewing strengthens the masseter and platysma muscles, potentially improving jawline definition very modestly.

Choosing the Right Treatment

The best approach depends on the primary cause of your double chin:

Primarily excess fat with good skin elasticity: Kybella, CoolSculpting, or submental liposuction
Excess fat with mild skin laxity: Liposuction combined with Morpheus8 or skin tightening
Primarily skin laxity with minimal fat: RF skin tightening, Ultherapy, or thread lift
Significant fat and skin laxity: Surgical neck lift (most comprehensive)
Weak chin contributing to the appearance: Chin augmentation with filler or implant, possibly combined with fat reduction

The Bottom Line

A double chin is largely genetically determined and often resistant to diet and exercise alone. Non-surgical options like Kybella and CoolSculpting can permanently reduce submental fat in patients with good skin elasticity, while RF and ultrasound devices address the laxity component. For moderate to severe double chins — especially those with both excess fat and loose skin — surgical intervention through liposuction and/or a neck lift provides the most dramatic and durable results.

A consultation with a board-certified dermatologist or facial plastic surgeon is the best first step. They can assess whether your double chin is primarily caused by fat, skin laxity, weak bone structure, or a combination, and recommend the treatment approach most likely to achieve your goals.

How to Get Rid of a Double Chin: Non-Surgical and Surgical Methods