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Juvelook side effects,
not all of them are dangerous
Beautys Doctor Director Wi Young-jin · Seoul National University-trained specialist
Check this first before reading
Q. After getting Juvelook,
if I can feel lumps, is it a side effect?
A. Small lumps felt immediately after the procedure
are absorbed within 2 weeks in most cases.
If the size doesn't shrink or gets bigger even after 3 weeks,
that's when a real check is needed.
Q. How many days of swelling is normal?
A. It usually subsides in 3 to 5 days.
If it lasts more than 7 days and is accompanied by warmth,
you should contact the clinic that performed the procedure.
Director Wi Young-jin's key insights
Swelling, bruising, and nodules—after Juvelook treatment
the difference between normal reactions and warning signs

What is Juvelook?
Juvelook (Juvelook) is a skin regeneration procedure that
directly injects poly-D,L-lactic acid (PDLLA)
into the dermis to induce collagen production.
Unlike traditional fillers that 'fill' volume,
Juvelook differs in that it 'stimulates' the skin to
make its own collagen.
That's why many people looking for natural improvement
choose it.

Swelling, bruising, nodules — how far is normal?
Most people who search for Juvelook side effects
ask about these three.
Swelling, bruising, and nodules.
Honestly, many of these are
not 'side effects' but 'normal reactions'.
But there's one important thing here.
Even the same symptom can mean something completely different
depending on duration and pattern.
When PDLLA particles enter the dermis,
the body recognizes them as foreign material
and triggers an immune response.
This is the mechanism by which collagen is formed.
Normal reaction vs warning sign comparison
Symptom | Normal reaction | Warning sign |
Swelling | Gradually decreases within 3 to 5 days, cold compresses can help | Lasts more than 7 days + warmth, swelling keeps getting worse |
Bruising | Localized at the injection site, disappears within 5 to 7 days | Spreads over a wide area, dark color persists for over 10 days |
Nodule | Size decreases within 1 to 2 weeks, no pain | Size remains/increases after 3 weeks, redness and pain |
Itching | Same day to 2 days, mild itchiness | Accompanied by rash or hives, spreads beyond the treatment area |
In one sentence, this table says:
“If it's shrinking, it's normal,
if it's staying the same or getting bigger, get it checked.”
This is something many people misunderstand,
and some people immediately get dissolving injections
or massage too hard just because they can feel a nodule.
That can actually worsen inflammation.
It's right to observe it for about 2 weeks.
Director Wi Young-jin's key takeaways
After Juvelook treatment, swelling, bruising, and nodules are mostly
a normal immune reaction that occurs as
PDLLA breaks down.
The key is not 'whether it's there or not'
but 'whether it's shrinking or growing'.
If there is no improvement even after 3 weeks,
or if warmth and pain are present,
be sure to return to the clinic.

When real side effects occur,
there is another cause
In practice, problems are far more often caused by
the 'injection method' than by the drug itself.
Juvelook is a procedure that uses mixed powder, so
particle size and uniformity vary depending on the mixing ratio,
type of diluent, and waiting time.
If mixed too concentrated, the risk of nodules rises,
and if too dilute, the effect weakens.
Injection depth is also important.
It needs to go precisely into the dermis, but
if it's too shallow, lumps show on the surface,
and if it's too deep, the effect is reduced.
I finely adjust the dilution concentration according to
skin thickness, elasticity, and treatment area,
and inject it in multiple points.
One thing I must say is that
Juvelook is also a procedure highly dependent on the practitioner.
So if you compare only the price,
it can lead to disappointing results.

Before and after the procedure, just following this
can reduce risk
Before the procedure
Starting 1 week before the procedure, stop aspirin and omega-3, etc.
supplements that affect blood clotting.
Drinking on the day is of course not allowed,
and it's best to avoid heavy drinking the day before as well.
After the procedure
Day 0 to 2: hot-water face washing, sauna,
avoid intense exercise
3 days to 1 week: avoid excessive massage of the treatment area
(do not forcefully press or rub nodules)
After 2 weeks: even if there are remaining lumps,
most are naturally absorbed.
If there is no improvement even after 3 weeks, contact us then.
Frequently asked questions
Q1. Can I wear makeup the next day after getting Juvelook?
If scabs haven't formed at the injection site,
light makeup is possible from the next day.
Please cleanse gently for about 3 days.
Q2. How many sessions are needed to feel the effect?
After one session, you may start noticing skin texture improvement 2 to 4 weeks later,
and after about 3 to 4 sessions,
many people feel changes in elasticity as well.
Q3. Can it be done on the same day as other procedures?
Laser toning and similar treatments may be possible,
but procedures that apply heat to the skin (such as Ulthera)
are safest when spaced at least 2 weeks apart.
This has been Wi Young-jin.
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