How to get rid of a double chin — why diet doesn't always help

A double chin isn't the same fat as everywhere else

Let's start with the foundation of this whole story: body fat isn't a uniform mass that the body burns evenly, like wood in a stove. It's a system of separate depots — regional "storage units", each governed by its own logic, its own nerve supply and its own resistance to energy signals.

Submental fat — the fat that forms the characteristic fold under the jaw — is one of the most stubborn fat depots in the whole body. It has a distinctive structure: dense, highly vascularised and anatomically boxed in on every side (the jawbone above, the neck muscles behind, the skin in front). There's simply nowhere for it to "spread out" as you lose weight. More importantly, it responds to a calorie deficit far more slowly and weakly than visceral fat or abdominal subcutaneous fat.

• Visceral fat (abdominal, around the organs). Metabolically the most active — responds to diet fastest. That's why the abdomen is often the first to "shift".
• Subcutaneous fat (thighs, buttocks, arms). Less reactive than visceral fat, but still responds to a sustained deficit.
• Submental fat (under the jaw). One of the most stubborn depots — denser, less responsive to hormonal lipolysis, and often genetically determined in its location.
• Facial fat (cheeks, eye area). Disappears quickly with weight loss — hence the paradox that the face visibly slims down while the chin stays put.

Why some people have it from birth, and others develop it over time

To understand why diet can be powerless, you need to distinguish between two different situations. They look identical in the mirror, but have completely different causes — and completely different solutions.

That's why two people with an identical number on the scale can look completely different — and need completely different approaches. Telling excess fat apart from loss of skin firmness is the first step towards a sensible decision about what to do.

What actually helps — a mechanism that works locally

Since the problem is local — both in terms of where the fat depot sits and where the skin has lost firmness — logic suggests the solution needs to be local too. This is exactly how injectable lipolysis works. It isn't a tool for overall weight reduction, but for precisely targeting a stubborn depot that a calorie deficit simply can't reach.

What's the mechanism? Put simply: the active substance — deoxycholic acid or phosphatidylcholine — is injected directly into the submental fat. It acts on the cell membrane of adipocytes and breaks it down, releasing the contents of the fat cells so the lymphatic system can gradually clear them. The body naturally eliminates the "released" fat over the following weeks, up to a few months after the treatment. The result is a gradual reduction in the thickness of the fat layer in this area.

It's worth being honest about expectations: injectable lipolysis isn't a weight-loss method and doesn't replace a healthy lifestyle. It's a precise tool for one specific, local purpose — reducing a stubborn depot that simply doesn't respond, despite a healthy weight and diet. The distinction between "I want to lose weight" and "I want to get rid of this one spot that bothers me" is crucial here.

When to choose lipolysis, and when a different approach

There's no single solution that fits every chin. The decision about what makes sense in a given case depends on several factors at once: the thickness of the fat layer, skin firmness, age and weight-loss history, and anatomy. That's why a consultation always precedes the treatment — and why the guidance below is indicative, not decisive.

• The fat depot is clearly visible and the skin still has good elasticity — injectable lipolysis can be a good choice on its own. The skin should gradually tighten after the fat is reduced.
• The fat depot is small, but the skin is clearly lax — lipolysis alone may not be enough here, and without support for skin firmness, the result can be unexpected. It's worth considering collagen-stimulating or lifting treatments.
• Someone who has lost a significant amount of weight — the priority is assessing skin elasticity before any further reduction. Skin firmness is often more important than the remaining fat.
• A young person with a genetic predisposition — lipolysis usually reduces the depot noticeably. Results last a long time, because the fat tissue in this area is permanently reduced.

Whatever the scenario, one thing stays the same: none of these decisions should be made in front of a mirror at home — only during a consultation. The difference between "lipolysis can help" and "something else is needed here" often only becomes clear through a hands-on examination and an assessment of tissue elasticity. That's the real value of talking to a specialist — not a menu of treatments, but an individual diagnosis.