Medical Articles

In-depth analysis on filler complications and repair techniques

158 articles
Which Collagen Stimulator Causes the Most Granulomas? How to Read the 117-Case Review
Nov 8, 2026
Dr. Ta-Ju Liu

Which Collagen Stimulator Causes the Most Granulomas? How to Read the 117-Case Review

A 2025 systematic review collected 117 patients who developed foreign body granulomas after collagen stimulator injections: PMMA 35%, PLLA (Sculptra) 31%, CaHA (Radiesse) 27%. These numbers are now being passed around as a ranking of which product is most dangerous. But the review only counted people who had a problem, it has no denominator, and the authors themselves state the results cannot be used to judge incidence. This article explains what the data is actually good for (granulomas can appear more than a decade later, and the area around the mouth is the most common site) and what matters more than the choice of product: how much is injected, how it is prepared, which layer it goes into, and the problem with treating a face as a fixed number of vials.

collagen stimulator granulomasafest collagen biostimulatorSculptra granuloma
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Face Looks Off After Botulinum Toxin? Toxin or Old Filler
Oct 26, 2026
Dr. Ta-Ju Liu

Face Looks Off After Botulinum Toxin? Toxin or Old Filler

Botulinum toxin changes how hard a muscle pulls. Filler changes volume. The two run on completely different clocks: the toxin's effect is measured in months and then it is gone, while cross-linked hyaluronic acid can still be visible on imaging years later. So when a face looks off after a toxin appointment, the cause is often not that injection at all; it is old filler becoming visible again. Dr. Ta-Ju Liu explains the mechanism difference, how to use the four-month line to sort it out yourself, the difference between dynamic and static asymmetry, and what ultrasound can and cannot answer here.

botulinum toxinbotulinum toxin side effectsfacial asymmetry after botulinum toxin
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Can Juläine Cause Nodules? Its Approved Label Gives a 1-to-14-Month Window
Oct 26, 2026
Dr. Ta-Ju Liu

Can Juläine Cause Nodules? Its Approved Label Gives a 1-to-14-Month Window

JULÄINE is marketed on its spherical microspheres and a low tendency to form nodules. In Taiwan it is sold as 知林 (Zhilin), but the product the health ministry actually licensed is named 珠嵐 (Zhulan), and its approved label says skin nodules and late granulomas may appear 1 to 14 months after injection. This article starts from that label: why Zhilin, Zhulan and Juläine are one product, what the public record says about its relationship to China's Löviselle, which risk the spherical particles address and which they leave untouched, and why the published studies cannot yet answer the question of delayed nodules. The nodule cases I see in clinic are Löviselle, not Juläine, and the article keeps the two apart.

Juläine nodulesJulaineLöviselle lumps
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Temple Filler Migration: Why It Pools Near the Eye Corner, Above the Cheekbone
Oct 24, 2026
Dr. Ta-Ju Liu

Temple Filler Migration: Why It Pools Near the Eye Corner, Above the Cheekbone

Filler went into your temple, but the lump is beside your eye, above the cheekbone? Temple filler tends to move downward and collect at the bottom of the temple, roughly from the brow tail and eye corner back to the front of the ear, just above the zygomatic arch. Dr. Ta-Ju Liu has removed temple filler from many patients: hyaluronic acid, Ellansé, other collagen stimulators, Aquamid, Amazingel and liquid silicone can all collect at the bottom of the temple, and some of it turns into firm lumps. Using a real case of permanent filler injected ten years ago (the patient remembered it as liquid silicone; the removed material looked more like Amazingel), this article explains why the space inside the temple lets filler move, what a fan-shaped injection pattern can and cannot control, and what to ask about depth, volume and massage before treatment.

temple filler migrationtemple filler lumpslump near eye corner after filler
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Ridge After an AlloDerm or Dermis Graft? Sheet vs Powder, and Whether to Remove It
Oct 17, 2026
Dr. Ta-Ju Liu

Ridge After an AlloDerm or Dermis Graft? Sheet vs Powder, and Whether to Remove It

You had allograft dermis or your own dermis placed in the nasolabial fold, under the eye, on the nasal bridge or in a depressed scar, and a year or two later there is still a firm strip you can feel, more obvious when you smile. Allograft dermis and injectable dermal powder sound alike, but one is implanted as a sheet and the other is injected as particles, and they fail and are treated differently. This article helps you work out which one you have and why it formed a ridge, then lays out the real cost of four options: waiting, camouflage with hyaluronic acid, open surgical removal, and ultrasound-guided pinhole reduction. It also explains why I do not take the whole graft out.

AlloDerm ridgeAlloDerm removalacellular dermal matrix complications
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You Were Told It Was Botulinum Toxin, So Why Is There a Lump? Identifying What Went In
Oct 12, 2026
Dr. Ta-Ju Liu

You Were Told It Was Botulinum Toxin, So Why Is There a Lump? Identifying What Went In

Botulinum toxin acts at the junction between nerve and muscle. It does not add volume, so by itself it does not leave a lump you can feel. When someone can feel something months later, either another material went in during the same session, or what went in was not what the label said. Dr. Ta-Ju Liu explains the gap between label and contents in unlicensed products, the checkpoints Taiwan's FDA tells patients to look for, what ultrasound can and cannot tell apart, and which symptoms belong in an emergency room rather than a clinic appointment.

botulinum toxinunknown source injectioncounterfeit injectable
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Your Lifting Treatment Didn't Deliver? Check What's Still Inside Your Face First
Oct 5, 2026
Dr. Ta-Ju Liu

Your Lifting Treatment Didn't Deliver? Check What's Still Inside Your Face First

A full round of ultrasound, radiofrequency or thread lifting, and the mirror says "maybe a little." From the revision side, part of this group has a problem that isn't the device at all. It's the question nobody asked: is there still something else inside this face? Dr. Ta-Ju Liu explains the three sources of a lifting treatment that goes nowhere, what the actual literature says about energy and filler interacting, and the order in which to subtract, support and tighten.

lifting treatmentHIFU liftingradiofrequency lifting
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Living Abroad and Need Filler Removed in Stages? How the Two Trips Work
Oct 3, 2026
Dr. Ta-Ju Liu

Living Abroad and Need Filler Removed in Stages? How the Two Trips Work

If you live outside Taiwan and your filler lumps need to be removed in stages, plan on at least two trips about 3 months apart. Dr. Ta-Ju Liu explains who does not need to fly in, what to send for a remote assessment, what happens on each trip, what your local doctor can and should not do in between, and how care continues once you are home.

filler removal abroadstaged filler extractiontravel to Taiwan for filler removal
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After a Filler Lump Is Treated, When Can You Tell If It Worked? Timing for Flushing, Hyaluronidase, Steroids and Removal
Sep 28, 2026
Dr. Ta-Ju Liu

After a Filler Lump Is Treated, When Can You Tell If It Worked? Timing for Flushing, Hyaluronidase, Steroids and Removal

On the day a lump is treated, the forehead looks flat or the cheek looks smooth, and it is easy to conclude it worked. But flushed-in water, injected medication and post-treatment swelling all prop irregularities up for a while. This article sets out when flushing, hyaluronidase, steroid-type injections, energy devices and removal can actually be judged, and when not to keep waiting.

how long to see results filler lump treatmentfiller lump came backsaline flush filler nodule
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HA Has an Antidote, Biostimulators Don't: Handling Vascular Occlusion From Non-HA Fillers
Sep 28, 2026
Dr. Ta-Ju Liu

HA Has an Antidote, Biostimulators Don't: Handling Vascular Occlusion From Non-HA Fillers

Headlines say someone was injured by "hyaluronic acid," but the story underneath is often about AestheFill, Ellansé, or Radiesse. In everyday conversation those nicknames are only confusing; the moment material enters a vessel, the composition decides what can still be done that day. HA filler in a vessel has hyaluronidase. PDLLA, PLLA, PCL, and CaHA have no matching antidote. This article maps the nicknames back to their compositions, explains why hyaluronidase cleaves HA but cannot recognise polyester microparticles or calcium microspheres, reviews what the recent literature actually did for non-HA occlusions and why the mechanism is not dissolution, and lists the signs that mean stop the needle and go now.

non-HA filler vascular occlusionhyaluronidase does not dissolveAestheFill vascular occlusion
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Bruising Under the Eye After GOURI (Liquid PCL): Work Out What That Shadow Is First
Sep 22, 2026
Dr. Ta-Ju Liu

Bruising Under the Eye After GOURI (Liquid PCL): Work Out What That Shadow Is First

GOURI is the liquid form of PCL. Its Taiwanese licence was issued only on 13 May 2026, and the approved indication is short-term correction of lateral canthal lines — the infraorbital region and the tear trough are not in it. If you have a patch of darkness under the eye that will not lift, the first job is to work out which of four things it is: an ordinary bruise, retained pigment, light scattering off the material itself, or placement that is simply too shallow. Those four behave differently over time, and they lead to different decisions. This article starts from the wording of the approved Taiwanese labelling, adds a seven-case series published in 2026, and explains how to read the colour, why hyaluronidase is not a low-cost experiment here, and when to stop waiting.

GOURIliquid PCLunder-eye bruising
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Featured Articles

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Featured Poster

Three rounds of dissolver. Still there?

Three rounds of dissolver. Still there?

Hyaluronidase only works on hyaluronic acid. If the filler is encapsulated, mixed, or not HA at all, it may not help. An ultrasound shows what is really there before you decide on removal.

Not only HA — other fillers can be assessed for removal too.

Not only HA — other fillers can be assessed for removal too.

HA, Sculptra, Ellansé, Radiesse, silicone, PMMA, polyacrylamide gel (PAAG), fat grafts — ultrasound first confirms the material and where it sits, then we assess how much can be removed.

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