
Submental fat, even if you lose it with exercise for 6 months
Common traits of people who still can't lose it
"I exercise and lose weight, but this area just won't slim down"
I hear that from so many people.
Today, I'll explain the reason step by step.

Submental fat isn't all the same fat, you know?
That's not the case
Submental fat is a localized fat layer that builds up
between the skin and muscles below the jawbone to a thickness of 5~15 mm.
Unlike abdominal or thigh fat, this area has
subcutaneous fat and subfascial fat
stacked in thin layers, so it doesn't reduce well
with exercise or dieting.
If the commonly used contour injection
temporarily breaks down fat with medication,
DCA-based treatments like Double Slim injections
destroy the fat cell membrane itself,
preventing it from filling back up,
which is the difference.

Why does exercise alone
reach its limits?
"To reduce the thickness of submental fat,
exercise alone has its limits.
If you have a recessed chin or a small frame,
even 1 mm of buildup can make a double chin visible,
so Double Slim injections are like
catching up to 6 months of exercise results in 2 weeks."
โ Director Wi Young-jin (Beautystone Clinic, Hongdae)
Some people have lost weight everywhere else, but the area under the chin remains,
or although they are on the thinner side, the side profile
still shows a double chin.
When overall body fat drops by 1~2%, submental fat
shrinks by only about 1~2 mmโ
it's an extremely stubborn area.
Especially if the lower jaw structure is small,
a 1 mm difference affects the side contour,
which is why people say, "No matter how hard I work out, my photos look the same."
On the other hand, a DCA fat-dissolving injection can reduce
the thickness by an average of 2~4 mm
in one treatment.

How to get rid of submental fat,
a personalized guide by type
A 49-year-old client who visited last week had the main cause not in fat, but in
loose skin and sagging muscles.
were the main causes.
If we give a fat-dissolving injection to someone like this,
it can reduce elasticity even further,
so I politely declined the procedure and recommended lifting instead.
Check which type you are in the table below.
Type | Features | Recommended approach |
Fat type | Can be pinched thickly with your fingers | DCA fat-dissolving injection |
Structural type | Little fat, but the chin is small | Refine the line with a chin filler |
Sagging type | Loose due to reduced elasticity | Lifting (ShurinkยทUlthera) |
Combined type | A mix of fat and sagging | Combine fat dissolution + lifting |
Three questions we get most often in the clinic
Q1. How long do bruising and swelling last after the injection?
From right after the procedure until the next day,
it can look quite swollen.
Usually about 70% goes down in 3~5 days, and
it looks natural after a week.
For important events, we recommend treatment at least 2 weeks in advance.
Q2. Once it's gone, does it stay gone forever?
Because the fat cells themselves are destroyed,
it's true that the area becomes one that doesn't gain fat easily.
However, if your weight suddenly increases by more than 5 kg,
it can fill back up,
so some degree of weight maintenance is necessary.
Q3. Are there any side effects or precautions?
The key is knowing the nerve pathways accurately
and controlling the depth.
In rare cases, nerve irritation can occur, but
it usually recovers naturally.
That's why you should look at the practitioner's skill
before the price.
If you take only one thing away today,
โ the under-chin area is a thin layer,
so type classification comes before exercise.
In the next post,
'How to overcome the plateau between the 2nd and 3rd sessions
of Double Slim injections' I'll explain.
This has been Wi Young-jin.
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