Fat-dissolving injections:

don't believe anyone who says

all the fat disappears in one session

"Doctor, I really want to get rid of it this time.

Will one session be enough?"

Whenever I see patients sitting

in the consultation room with such desperate hope,

part of me wishes

I could just say, "Yes, we'll take care of it all in one go!"

and put their minds at ease.

But for the body to

naturally flush out fat on its own,

a little patience and consistent effort are needed.

In fact, the number of sessions and dosage planning

account for half of the results.

After seeing hundreds of cases,

I've come to know certain things for certain —

and I'd like to share them honestly today.

So you don't end up hurting your body by rushing,

I'll carefully map out

the healthiest, most reliable schedule

to help you achieve the shape you're after.

💡 Key Takeaways from Today's Post

Q. Can you really see results in just one session?

A. It's difficult to expect dramatic changes from a single session.

Most people need 3–5 or more cumulative sessions.

Q. Does fat just melt away after the injection?

A. The treatment works by destroying fat cells and eliminating them from the body,

but this process alone takes at least 4–8 weeks.

Q. Is the effect the same for everyone?

A. Results can vary quite a bit depending on fat thickness, treatment area, and individual metabolism.

What fat-dissolving injections actually do

The key active ingredient in fat-dissolving injections is deoxycholic acid.

It's a substance naturally found in our bile,

and when injected into the fat layer,

it works by breaking down cell membranes.

Destroyed fat cells don't disappear right away —

inflammatory response → macrophage phagocytosis → lymphatic drainage

they are gradually eliminated in this sequence.

This process typically takes 4–6 weeks.

So feeling swollen and firm right after treatment

is actually a completely normal response.

Common misconceptions

1. "One session is all it takes"

To be honest, people who see dramatic results after just one session

are limited to those with very thin fat layers.

For thicker areas like the abdomen or thighs,

you should plan for at least 3 sessions

.

2. "You can see results immediately after the injection"

Because the elimination process takes several weeks,

many people actually look more swollen right after treatment.

This is not an abnormal reaction — there's no need to worry.

3. "You don't need to watch your diet"

The injection reduces the number of fat cells in a specific area,

but it cannot prevent the remaining cells from growing larger.

Your lifestyle habits need to support the results for them to last.

👨‍⚕️ Dr. Wi Youngjin's clinical note:

In my experience, what most significantly affects outcomes is

injection depth and dosage design.

Using excessive doses on someone with a thin fat layer

raises the risk of skin necrosis or nerve damage.

Lower-cost clinics may increase the dose per session

to create the appearance of "faster results."

But staying within a safe dosage range and progressing gradually

is far safer and produces more natural-looking results.

A good fit for some,

and limited for others

When injections are a good fit

• Small, targeted areas such as under the chin, the back of the upper arms, or the inner knees

• Stubborn fat that doesn't budge even with diet and exercise

• When liposuction feels like too much and you're looking for a lighter option

Cases with limitations

• Areas with very thick fat layers or a wide surface area

• When significant skin laxity requires separate skin-tightening treatment

• When immediate results are needed within 1–2 weeks

Things to check

before your treatment

1. Fat thickness

   
   
   

   Whether injections are actually suitable for the area

   should be assessed by pinching the skin or getting a professional evaluation.

   
   
   

2. Underlying conditions

   
   
   

   If you have lymphatic system issues,

   the elimination process may be slower.

   
   
   

3. Ingredient check

   Ask which product will be used

   and whether the ingredient concentration is appropriate.

The downside is cost.

Prices vary by area per session,

and since treatment is often done in packages,

the total cost can end up higher than initially expected.

That said, minimal disruption to your daily routine

is a major advantage.

Frequently Asked Questions (FAQ)

Q1. Is it really true that fat doesn't come off in one session?

A. Yes — claiming it's "done in one session"

is closer to marketing than reality.

After fat cells are destroyed,

the body physically needs time to eliminate them.

Q2. I can feel lumps after treatment.

A. This is a temporary inflammatory response

that occurs as fat cells are broken down.

Swelling typically subsides within 1–2 weeks

and gradually resolves on its own.

Q3. Can the fat come back?

A. Destroyed fat cells do not regenerate,

but if the remaining cells enlarge,

the results may appear diminished.

If you have any questions,

please feel free to reach out via KakaoTalk.

This has been Dr. Wi Youngjin.

Further Reading

▶Considering tattoo removal in Hongdae or Hapjeong? Dr. Wi Youngjin answers your questions

▶Hongdae fat-dissolving injections — why they didn't work? (*Only DCA is effective)

▶"Isn't eye-area Botox just for prevention?" Cases where Sofwave is the better choice

▶[Beauty Stone] How to save on Rejuran costs: treatment intervals matter more than you think

▶Beauty Stone Clinic — Hapjeong Dermatology