A double chin — medically, submental fullness — is the pad of fullness beneath the chin and jaw.
A double chin — medically, submental fullness — is the pad of fullness beneath the chin and jaw. It’s usually caused by some mix of fat, skin laxity, and genetics, and often won’t budge with diet or exercise. The good news: several treatments target it effectively. The right one depends on whether your double chin is mostly fat, mostly loose skin, or both.
A double chin — medically, submental fullness — is the pad of fullness beneath the chin and jaw. It’s usually caused by some mix of fat, skin laxity, and genetics, and often won’t budge with diet or exercise. The good news: several treatments target it effectively. The right one depends on whether your double chin is mostly fat, mostly loose skin, or both. This guide covers the causes and every major option, non-surgical and surgical.
It’s rarely just one thing. The main contributors are:
Genetics. The biggest factor for many — you may be predisposed to store fat under the chin regardless of weight.
Weight. Excess weight adds fat to the submental area, though plenty of slim people have a double chin too.
Aging. Skin loses elasticity over time, so the area sags and fullness becomes more visible.
Posture (“tech neck”). Chronic forward-head posture can weaken neck muscles and emphasize the look.
This is the single most important question, because it determines the treatment. If your double chin is mainly excess fat, fat-reduction treatments (Kybella, CoolSculpting, liposuction) are the answer. If it’s mainly loose, sagging skin, removing fat won’t help — and could even make laxity look worse — so you need skin-tightening or a surgical lift. Many people have a combination, which is why a professional assessment of your skin quality and fat is the essential first step.
Here’s how the major treatments compare:
Quick comparison — Kybella — Best for: Submental fat; Type: Non-surgical injectable (permanent) | CoolSculpting — Best for: Submental fat; Type: Non-surgical fat freezing | Radiofrequency / ultrasound — Best for: Mild fat + skin laxity; Type: Non-surgical skin tightening | Submental liposuction — Best for: Moderate fat; Type: Surgical (one session) | Neck lift — Best for: Significant fat + loose skin; Type: Surgical (most dramatic).
For submental fat without major skin laxity, Kybella is the leading non-surgical option — the only FDA-approved injectable that permanently destroys fat cells under the chin. It takes 2–6 short sessions about a month apart, with results building over a few months and noticeable swelling for a week or two after each. Because the fat cells are gone for good, results last as long as your weight stays stable. It’s the natural starting point for most people whose concern is fat rather than skin.
If you’d rather not inject, CoolSculpting freezes and gradually clears fat cells (also non-surgical, also needs patience). For double chins driven partly by loose skin, radiofrequency and focused-ultrasound devices tighten skin and stimulate collagen, sometimes alongside mild fat reduction — a good fit when laxity is the main issue. These build gradually over weeks with little to no downtime.
For faster or more dramatic results, surgery delivers. Submental liposuction removes moderate fat through a tiny incision in one session, while a neck lift addresses both excess fat and significant sagging skin — the most comprehensive option, and the right one when loose skin is substantial. Both require real recovery (one to several weeks) but are essentially one-and-done, with long-lasting results.
Partly, sometimes. If your double chin is weight-related, overall fat loss through diet and exercise can reduce it. But when the cause is genetics or aging, neither diet nor targeted “chin exercises” reliably removes it — you can’t spot-reduce fat, and exercises mainly tone muscle rather than shrink the fat pad or tighten skin. That’s why so many people at a healthy weight still seek a procedure.
Slimming the under-chin is often paired with sharpening the jawline for a cleaner profile. While Kybella removes the fat, dermal fillers like Juvederm or Restylane (compared in Juvederm vs Restylane) can add definition to the jaw and chin, and a neuromodulator can soften platysmal neck bands. These address different things — see Botox vs dermal fillers — and are often combined for an overall lower-face refresh, with their own costs and longevity.
Facial aging rarely shows up in just one place, so a double chin is often treated alongside other concerns in a single plan. Up top, movement lines like forehead wrinkles are treated with a neuromodulator — Botox or an alternative such as Dysport, Daxxify, Jeuveau, or Xeomin (each weighed against Botox in vs Dysport, vs Daxxify, vs Jeuveau, and vs Xeomin), with predictable side effects, cost, and a 3–4 month duration. In the mid- and lower face, volume is restored with fillers — for the lips (lip filler) or hollows like under-eye hollows — which carry their own side-effect profile. Mapping all three jobs — relaxing, volumizing, and (with Kybella) fat removal — is how an injector builds a balanced result rather than over-treating one area.
Start with an honest assessment of fat versus skin, then match the treatment: Kybella or CoolSculpting for fat, skin-tightening for laxity, surgery for large or combined cases. Because the under-chin area carries some risk (especially nerve safety with Kybella), choose a licensed, experienced provider — a board-certified dermatologist or plastic surgeon, or a trained injector under medical supervision — who treats this area often. Find and compare qualified providers near you to get a personalized plan.