Lately, after getting all three skin booster sessions,

"Doctor, why am I not seeing any effect?" they ask,

and people bringing in treatment records from other clinics have noticeably increased.

Today, I'll explain the reason step by step.

Skin boosters all seem similar, right? But actually

Skin boosters are procedures that directly inject ingredients like hyaluronic acid or

polynucleotides into the dermis layer of the skin,

improving skin texture and hydration.

From Rejuran and Juvelook to water glow injections and exosome boosters,

the names are all different, but the depth they are injected at is

mostly the dermis, around 0.5~2 mm.

Unlike procedures that fill volume like fillers or

pull the fascia (SMAS) like Ulthera,

the layer they act on is completely different.

Why is it that the same skin booster works for some people and not for others?

"Even though I got all 3 skin booster sessions,

if there's no effect — chances are it's not the product's fault, but a mismatch from using skin boosters for sagging at the muscle/bone stage.

The face has four layers — shell, fat, muscle, and bone — and each layer has its own answer.

"

— Director Wi Youngjin (Beauty Stone Clinic, Hongdae)

It's easiest to understand if you compare skin boosters to painting.

When wallpaper has turned yellow and you apply fresh paint,

the surface looks neat.

But if the wall itself is warped or

the pillars in the house have sunk,

no matter how thickly you paint,

the crooked lines still show.

It's the same with the face.

The face has four major layers.

Shell (skin) → fat → muscle (SMAS) → bone.

Aging progresses at different speeds in each layer,

and each layer has a different answer.

Skin boosters are for the topmost shell layer among these.

They work really well for texture, hydration, fine lines, and blurred pores —

but in cases of sagging, loss of volume,

or deep nasolabial folds,

the problem is in the lower layers, so no matter how well you improve the shell,

you won't feel a difference in the mirror.

Honestly, I didn't see this pattern at first either.

Last month, a 34-year-old patient came in,

and even after getting three Rejuran sessions at another clinic,

she said, "Nothing has changed at all."

Even after week 1 and week 2, she said she looked exactly the same herself.

But when we compared the photos, the pores and texture

had definitely improved.

What the patient was worried about wasn't texture, but

the area next to the mouth looking saggy.

That was an SMAS-layer issue, so it was an area

that skin boosters simply can't address.

For this patient, we first tightened the SMAS with Shurink,

then added one more skin booster session three months later.

Only then did she say, "Ah, it's different."

It wasn't that the skin booster hadn't worked,

the order had just been backwards.

The side-effect side is structured similarly.

Common reactions like bruising, swelling, and tiny nodules

are experienced by about 10 to 15 out of every 100 people,

and most resolve naturally within 1 to 2 weeks.

But it's not all harmless.

If it enters a blood vessel or if too much is

placed too superficially,

a discoloration called the Tyndall effect may remain,

making the skin look bluish.

It's not common,

but once it happens, recovery can take several months.

The prevention protocol is simple.

Don't inject too much into one area at once,

keep the depth at 0.8 to 1.2 mm,

and switch to a cannula in areas where blood vessels run.

If an adverse reaction appears, the right move is to

go in and remove it within the first 24 hours.

Director Wi Youngjin's key takeaway

Before deciding that a skin booster didn't work,

first figure out whether what you care about is texture/hydration/pores or sagging/volume.

If it's the former, skin boosters are the answer,

and if it's the latter, the right order is to address the lower-layer procedure first and add the skin booster at the end.

So does that mean I should get a skin booster?

Then where do I fall?

As you can see from the table,

the people for whom skin boosters are the first choice

are only the cases in the first row.

For everyone else, if you get skin boosters first,

you end up following the classic path of

"I got all three sessions and nothing changed."

By now you might be wondering this

Q1. If I got all 3 skin booster sessions and truly have zero change, is there any point in getting more?

A. To be honest, I wouldn't recommend extending the same procedure to 4 or 5 sessions.

If you still can't tell after 3 sessions, it's one of two things.

First,

the area you're concerned about is not in the skin-booster zone.

Second,

you judged it at 1 to 2 weeks when it actually fills slowly over 2 to 3 months, so you concluded too early. Compare photos before the procedure and 3 months later, and

if there's still no difference, you should change the procedure itself.

There's another question that's similar to this.

Q2. Does switching skin booster types change the effect? Like from Rejuran to Juvelook, for example.

1. Yes.

   Skin boosters may look the same, but they are really all different,
   so there will be one that suits you.
   If it's redness, Revive;
   if it's wrinkles, Juvelook skin booster, and so on.

Q3. I can feel a nodule after getting a skin booster. Will it go away if I leave it alone?

A. Usually, most small nodules are absorbed and disappear within 2 to 4 weeks.

A gentle massage is enough.

But there's one thing I have to say for sure:

if it hurts when pressed,

turns red,

or feels like it's getting bigger even after 2 weeks, it may not be a simple nodule but an inflammatory reaction, so

you need to go back to the clinic where you had the procedure right away.

The longer you wait, the harder it becomes to treat.

Thinking "It'll get better" and letting a month pass is the worst choice.

If you take just one thing away today — it's not that the skin booster didn't work, but that there's a high chance it was a mismatch, because the answer lies in a different layer.


In the next post, I'll explain how to tell, in just one minute in front of the mirror, which layer your concern belongs to. If you check just two finger positions, you can almost tell whether it's a shell problem or an SMAS problem. This was Wi Youngjin.

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