2026-10-18
Hongdae Dermatology: Does Body Onda Lifting Really Help with Weight Loss?
Explains why skin sags after weight loss due to lost collagen, and how Body Onda microwave lifting firms the dermis and reduces stubborn fat, plus what to consider before treatment.
Lost weight, but your figure hasn't changed?!
Hello 🙂
This is Dr. Go-eun Lee, Head Physician at Nine Clinic, Hongdae Dermatology.
Your upper arms are still thick,
your stomach has actually become more wrinkled,
and your thighs look even wider than before.
To be honest, exercise and diet can reduce fat,
but restoring a sagging body line is a different matter altogether.
Recently, a patient with a similar concern came to see me.
In cases like this,
I often recommend “Body Onda” at Hongdae Dermatology,
which addresses both fat and firmness at the same time.
So today, I want to cover two things:
why skin loses its firmness even after weight loss,
and how Body Onda can improve it.
If you've been dealing with this concern,
please focus and read for just three minutes today too!
Hongdae Dermatology: Why Your Body Line Collapses After Weight Loss!
As always, let me start with the conclusion!
It's because the skin cannot support
the space left behind by the fat.
To be precise, it's because only the fat was lost
while collagen and elastin had already become insufficient.
Skin is not just a simple outer layer.
It contains many “support structures” inside.
Among them, collagen fibers act like “tension cords”
that pull the skin up from underneath.
But when weight loss or fat breakdown occurs,
these structures suddenly lose their “support.”
When fat disappears, the space it leaves behind becomes “empty.”
If there is enough collagen, elasticity is maintained.
But if collagen is lacking, that space is left “wrinkled and sagging.”
In fact, I see these cases very often in consultation.
1. Upper arms look loose even after exercise
2. Thighs look wider than before
3. The abdomen is wrinkled, as if the skin has caved in, even though the fat has decreased
This isn't simply a matter of “lack of exercise.”
Fat and elasticity were lost together,
and there was no stimulus to restore that elasticity.
In other words, it's a state where the body had no reason to rebuild what was lost.
Especially after your mid-30s,
the body's ability to regenerate collagen drops sharply,
so if you just wait, improvement is difficult.😢
So in these cases, I believe
it's not just about removing fat,
but also about how to rebuild that area,
which is why restoring elasticity must be addressed as well.
For these reasons, people who were not satisfied with
injections or exercise alone
start to look into lifting devices like ‘Body Onda.’🙂
So how does Body Onda solve this problem?
Body Onda at Hongdae Dermatology is a procedure that “restores the areas left behind after fat loss.”
To be more specific,
it applies heat to areas that have become loose after fat loss,
realigning collagen and tightening the skin.
Unlike the high-frequency or ultrasound devices we commonly know,
Body Onda is a lifting device that uses an energy called “microwave.”
This energy
1. leaves the skin surface untouched, and
2. delivers heat intensively only to the dermis and the subcutaneous fat layer beneath it.
What's important here is that two effects occur at the same time!
1. Dermal collagen stimulation → elasticity remodeling
The heat from Body Onda induces thermal coagulation of collagen fibers.
During this process, old collagen contracts,
and new collagen is generated, so the skin structure becomes firm again.
Simply put, it has the effect of tightening loose skin from within.
2. Subcutaneous fat layer stimulation → reduction of stubborn fat
Body Onda uses a body-specific handpiece that reaches a depth of 7 mm.
This depth is a layer that regular moisturizers, cosmetics, or injections can never reach.
When heat is applied to that area,
→ the cell membranes of fat cells weaken, and breakdown is gradually induced
→ changes occur even in areas that don't respond well to exercise or diet.
And what about pain?
Body Onda uses a patented contact cooling system,
which keeps the skin surface at 5°C or below.
In other words, it works warmly on the inside while protecting the outside with cold.
That's why the risk of burns during treatment is low, and the pain is mild enough to be done without anesthesia.
Who is this especially suitable for?
▸ People concerned about areas that don't slim down even with exercise, such as upper arms, love handles, or thighs
▸ People who have lost weight but feel their skin has sagged and looks even looser
▸ People who have had fat-dissolving injections but didn't get firmness results
▸ People who need to return to daily life quickly after treatment (almost no downtime)
Be sure to read this section before getting Onda treatment
Many people considering treatment ask about device specs or prices first.
Those are important, of course,
but for lifting treatments, “how the energy is delivered” matters more.
In particular, since Body Onda is a microwave device that delivers heat to deeper layers of the skin,
1. which area it is applied to
2. how deep it goes
3. at what intensity
the results can vary greatly.
Unlike the face, skin thickness on the body differs by area,
the distribution of subcutaneous fat varies,
and sensitivity to heat differs greatly from person to person.
If these factors are not considered and the treatment is approached simply by filling a set number of shots,
some areas may show insufficient results,
or, conversely, excessive stimulation may cause discomfort.
So before treatment, it's important to check:
▸ Which areas have thicker fat layers
▸ Whether you have a constitution that is sensitive to heat
▸ Which areas have lost collagen density
▸ Whether lifting or fat reduction is the priority
Based on this information,
I believe it's very important to design the treatment differently for each area.
For example,
▸ For areas where improving firmness is the goal, like upper arms, energy is concentrated and delivered
▸ For areas with more fat and greater heat sensitivity, like love handles, energy is spread out while allowing sufficient cooling time
In this way, even with the same device,
the results can be completely different depending on "where, how much, and how" it is applied.
In Closing
Today we looked at Body Onda at Hongdae Dermatology.
Honestly, this treatment isn't necessary for everyone.
If you're managing well with exercise, that's the best approach.
However,
“I've put in the effort, but the results are disappointing.”
“I've lost weight, but my body line seems to have collapsed.”
If you have concerns like these,
Body Onda may be one solution.
What matters most is accurately understanding your body's condition
and choosing the method that fits it!
If you have any more questions, feel free to ask anytime^^
“We always want you to become more beautiful.”
This was Go-eun Lee of Nine Clinic, Hongdae Dermatology!
And by the way,
did you know we also have a YouTube channel?
We share short and useful information about various procedures,
so please stop by and take a look 😊
#HongdaeDermatology #HongdaeEntranceDermatology #HongdaeStationDermatology #HapjeongDermatology #SinchonDermatology #BestHongdaeDermatology #HongdaeDiet #HongdaeLifting #OndaLifting #BodyOnda #BodyProcedure #BodyLifting #DietProcedure #DietClinic #BodyLine #LineImprovement #Diet #SLine
Frequently Asked Questions
Why does my body line collapse even after losing weight?
Because the skin cannot sufficiently support the space left behind after fat loss. The article explains that when only fat is lost while collagen and elastin are already insufficient, the area becomes wrinkled and sagging.
What energy does Body Onda use?
Body Onda is a lifting device that uses “microwave” energy. It is described as leaving the skin surface untouched while concentrating heat on the dermis and the subcutaneous fat layer.
Does Body Onda hurt?
According to the article, the pain is low, to the point that the treatment can be done without anesthesia. A patented contact cooling system keeps the skin surface at 5°C or below, which is said to reduce the risk of burns.
Who is Body Onda best suited for?
It is described as suitable for people concerned about areas like upper arms, love handles, and thighs that don't slim down with exercise. It is also said to suit those who had fat-dissolving injections without achieving firmness, or who want to return to daily life quickly after treatment.
Do device specs or price determine the results?
Device specs and price matter, but the article emphasizes that how energy is delivered has a greater impact on results. It notes that outcomes can vary greatly depending on where, how deep, and at what intensity the energy is applied.
Is treatment unnecessary if exercise is enough?
According to the article, if you are already managing well with exercise, that is the best approach. Body Onda is not necessary for everyone, but it may be one option for those who have put in effort and are still unsatisfied with their body line.