Frequently Asked Questions

Once the body forms a fibrous capsule around the filler, dissolvers cannot penetrate this wall. Additionally, hyaluronidase dissolves your own native hyaluronic acid, potentially causing tissue depression and hollowing. Dr. Liu's single-pinhole extraction physically removes the encapsulated material along with its capsule, as much as can be safely removed — an option that deals with the material itself.

Steroids indiscriminately destroy surrounding normal fat tissue, creating "crater" depressions harder to repair than the original lump. 5-FU injections cause extreme pain and have limited efficacy against encapsulated or calcified materials. Both are suppressive approaches — they do not remove the foreign body. Dr. Liu's technique physically extracts the material, dealing with its source as much as can be done safely.

Fat grafts were previously considered irreversible once injected. Dr. Liu developed single-pinhole micro-fragmentation that breaks down calcified fat lumps and extracts them through one needle-sized entry. This includes calcifications that even laser cannot eliminate. Few other physicians currently offer this minimally invasive fat graft revision method.

Yes. Using ultrasound-guided micro-fragmentation and aspiration through a single pinhole, we can remove non-dissolvable materials including Ellansé (PCL), Sculptra (PLLA), Radiesse (CaHA), silicone, PMMA, and polyacrylamide. No scalpel, no stitches; swelling and bruising still usually take about 2–3 weeks to settle.

Dr. Liu is among the primary practitioners performing single-pinhole ultrasound-guided physical filler extraction. The usual approaches are dissolvers, steroids, or 5-FU — all of which suppress rather than remove. When those methods fail (many of our patients arrive after conventional treatments have failed), Dr. Liu's extraction is a primary remaining option.

Yes. This specialized procedure requires dedicated ultrasound equipment and Dr. Liu's technique. We see international patients from Japan, Korea, USA, and worldwide. Our international patient team assists with travel planning.

Most pressure-related headaches ease once the filler is dissolved, but a small number of people still have headaches, facial pain, or even neck and shoulder aches despite very little residual filler and several rounds of hyaluronidase. Dr. Liu's clinical hypothesis (not yet confirmed by research) is that some people are especially sensitive to foreign material, so even a small residue may trigger a nerve reflex, with the pain referred to the fascia of the head and neck and presenting much like a tension-type headache. We use ultrasound to look for residue, treat the painful areas with extracorporeal shockwave therapy and muscle-relaxation treatment, and have a board-certified neurologist on the team take part in the assessment.

Nothing showing on inspection or palpation doesn't mean nothing is there. High-frequency ultrasound can show the location, depth, and extent of filler under the skin, can broadly distinguish materials by their imaging features, and shows where it sits relative to blood vessels and nerves. Once you know where it is, the next steps have a basis.

Facial Overfilled Syndrome (FOS), commonly known as "pillow face" or "filler face," occurs when repeated filler injections gradually alter facial proportions. Symptoms include puffy cheeks, face looking bigger after fillers, stiff unnatural smile, and a feeling that something looks off. Because changes happen slowly, most patients cannot perceive them — a phenomenon called "Filler Blindness." Our online educational self-check uses 6 objective facial metrics to detect these signs. Swelling after a hyaluronic acid injection usually settles within 1–2 weeks; pillow face persists for months or longer.

Upload 3 photos (a baseline before fillers, current neutral face, current smiling face). The assessment analyzes 6 facial metrics — malar volume, midface width, nasolabial depth, infraorbital contour, jawline definition, and symmetry — to generate an objective FOS risk score and personalized revision recommendations within 60 seconds. No registration, fully anonymous.

Common signs include: face looking bigger or puffier, losing your natural contour, under-eye filler sagging into bags, bumpy uneven forehead, and lower face protruding forward. You may also notice smile feels stiff and unnatural, face looks different from old photos, or that nagging feeling of "something's off but I can't explain it."

This is an anonymous online educational self-check tool, with no registration required. Your photos are used only for the current analysis session and are immediately deleted afterward — never stored on any server. No personal information is collected. Results are for reference only.

Yes. If hyaluronidase didn't work, or if your filler is non-dissolvable (Sculptra, Ellansé, Radiesse, fat graft), Liusmed Clinic specializes in ultrasound-guided single-pinhole filler extraction — precisely locating and removing excess filler under real-time ultrasound, without open surgery; the pinhole heals in about two weeks and is usually barely visible afterwards.

"Filler Blindness" is the phenomenon where gradual filler accumulation makes it nearly impossible for patients to notice their own facial changes — similar to how slow weight gain goes unnoticed. That's why we built this assessment: to bypass subjective perception and give you scientific, data-driven answers.

We specialize in "micro-pinhole technique" with wounds only pinhole-sized (hidden in skin texture or mucosa), which heal in about 2 weeks and are usually hard to see afterwards, though scarring still depends on the individual. The pinhole is small, but this is an extraction, so swelling and bruising are expected. Swelling and bruising usually settle in about 2–3 weeks, and the final result takes about 3 months, varying from person to person.

The face has a complex distribution of nerves and blood vessels. Dr. Liu has 20 years of minimally invasive surgery experience, thorough knowledge of facial anatomy, and can precisely avoid neurovascular bundles (Danger Zones) while removing as much as can be safely removed.

Yes. Literature documents delayed granuloma cases appearing 10 years after injection. Time alone doesn't rule out treatment: as long as the material shows on ultrasound and can be reached safely, removal can usually still be evaluated; how much can be removed depends on the material, its location, and whether it has encapsulated.

Repair surgery is highly customized medical treatment. Cost depends on filler type, number of lumps, depth of location, and severity. This requires the doctor's hands-on examination and ultrasound assessment before quoting.

Same principles, different details. Most of these materials work by stimulating collagen production, so hyaluronidase cannot dissolve them; in hybrid products that contain hyaluronic acid, hyaluronidase can only dissolve the hyaluronic acid portion. Before treatment, ultrasound is used to confirm which material it is, which layer it sits in, and whether it has encapsulated, and only then is observation, medication, or removal decided.

Our clinic does not offer collagenase injections. The only support so far for using collagenase on PCL nodules is one small 2025 study (3 patients), which other clinicians questioned soon after publication, and the mechanism is still contradictory: collagenase breaks down collagen, whereas PCL is a polyester. It is not a validated method, and it carries risks of intravascular injection and allergic reaction.

Hyaluronidase works only on hyaluronic acid. Sculptra, Ellansé, Radiesse, silicone, PMMA, and polyacrylamide hydrogel cannot be dissolved; and even hyaluronic acid may dissolve poorly if it has encapsulated, is present in a large volume, or sits in a difficult location. That is why ultrasound is used first to confirm the material, the layer, and any capsule before deciding whether to dissolve, remove, or observe.

Yes. The longer lumps remain, the harder and more calcified they become. Traditional liposuction cannot handle them, but our "micro-pinhole crushing" technique can break down and extract calcified tissue. We've treated many cases 5 or even 10+ years old.

This depends on the repair technique. Contour smoothness is attended to during the removal itself. If there is noticeable pre-existing laxity, non-invasive radiofrequency or ultrasound tightening, or an open facelift, may be added depending on the degree.

Yes, though it's more challenging. The under-eye skin is extremely thin, so we use finer micro-instruments. Under ultrasound guidance, we precisely remove superficial granulomas while preserving normal under-eye fat to prevent tear trough hollowing.

Usually local anesthesia plus gentle pain-relief anesthesia. The wound is only pinhole-sized, but this is an extraction, so swelling and bruising are expected: they usually settle in about 2–3 weeks, and the final result takes about 3 months. No hospitalization needed.

Too risky. Steroid injections easily cause surrounding normal tissue atrophy, creating "crater" depressions, and cannot truly eliminate the calcified lump core. For facial repair, "physical removal" is superior to "chemical atrophy."

Repair surgery is highly customized medical care. Cost depends on the extent, number, depth, and degree of calcification of the lumps. This requires the doctor's personal assessment through palpation and ultrasound before an accurate quote.

Acute-phase management is measured in minutes to hours and is carried out by the physician who first treats the occlusion. Recovery treatment can begin once the acute phase has stabilized; the earlier it starts, the more tissue can usually be preserved.

Sessions of 90 minutes at 2.0-2.5 ATA pressure, once daily during the acute phase for 10-14 consecutive days. During treatment, you simply rest or read inside the chamber; it is generally not painful, though you may feel ear pressure during compression, which eases with the equalizing technique you will be shown. HBOT increases plasma dissolved oxygen by 10-15 times.

Completely different. Regular beauty drips are cosmetic-purpose with basic vitamins. Functional repair IV therapy is therapeutic, designed specifically for occlusion damage, containing targeted vasoactive components, microcirculation optimizers, and high-dose antioxidants.

Yes, but it must be addressed in the correct sequence. First, tissue-level repair must be completed (HBOT to rebuild microcirculation, photobiomodulation to promote cellular regeneration). Only after the skin's foundational structure has recovered should pigmentation be treated. Premature laser use may cause secondary burns.

Yes. For non-HA filler occlusions that lack an antidote, recovery treatment plays an even more critical role. The multi-modal recovery protocol addresses both ischemia and inflammation simultaneously.

Eschar is a dry, hard crust formed after full-thickness skin necrosis — never peel it off yourself. Proper management involves staged debridement by a physician, softening with enzymatic dressings, and promoting new tissue growth with moist healing therapy and growth factors.

It may still help. Acute management is best started as early as possible, but even after several days, a multi-modal recovery approach aimed at the marginal tissue may still reduce the extent of necrosis and support wound healing. How much improvement is possible needs a physician's assessment.

Post-occlusion recovery is a highly customized medical service. Cost depends on the extent and severity of damage, the combination of treatment modalities required, and the number and duration of sessions.