Lip filler gone wrong, and only offered surgery? Get assessed first

Lip filler gone wrong, and offered surgery? Read this first

Patients come to Dr Sin Yong after being told that lumps in the lip have to be cut out, that silicone can only be removed by an operation, or that nothing more can be done. Before you agree to surgery on your lips, know what it means:

• A scar. Every cut through the skin of the face heals with a scar.
• A dent. Cutting out a lump takes tissue with it, and the area can heal hollow or uneven.
• Nerve injury. Nerves that give the face feeling and movement run close to where filler sits. An injured nerve can leave numbness, or weakness in a smile, a lip or a brow.
• Product left behind. Filler spread through tissue is hard to remove completely.
• No way back. Tissue that has been cut out cannot be put back.

The lip has its own risks. Filler that has spread through the lip and scarred it cannot simply be lifted out, so removal can mean reshaping the lip, and the edge, fullness and movement of the lip all have to heal well. The facts are set out in surgery on the lip below.

In Dr Sin Yong's practice, almost every hard lump is treated without surgery. If yours is one of the few that needs surgery, you are told plainly, and why. He maps every lump with ultrasound, dissolves hyaluronic acid, and treats silicone and other material that cannot be dissolved with the Sculpting mode of Time Freeze Laser LCLR®, without an incision.

What goes wrong with lip filler

Most problems after lip filler fall into a few patterns, and timing is the first clue to which one you have.

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Most complications of lip filler are mild and manageable, but blocked vessels, infection and delayed nodules can cause real problems and may need more invasive treatment (Kroumpouzos 2023). In a review of 82 published complications after lip augmentation with temporary fillers, lumps were the commonest, and migration and discoloration were also reported (Diwan 2023).

“For hard lumps from mixed products, I use one tool, Time Freeze Laser LCLR®, to target the material without surgery.”

Dr Sin YongOn hard lumps from mixed fillers and skin boosters

Vascular occlusion after lip filler: act at once

The arteries that supply the lips run inside them, close to where filler is placed. Filler that enters or presses on one of them can cut off the blood supply to part of the lip or the skin around it. The warning signs are pain that is severe or getting worse, a pale or white patch, then a dusky, purple or mottled pattern spreading across the lip or the skin above it; later, blisters or dark scabs can appear.

Urgent: a change in vision or eye pain after filler: call 995 now. Skin that turns pale, dusky or mottled, or pain that is getting worse, needs urgent assessment by the doctor who injected you, or at A&E, now. See the warning signs of a blocked blood vessel after filler.

A blocked vessel from hyaluronic acid filler is treated at once with high doses of hyaluronidase (Landau 2015), and the skin test is not done first when delay could cause harm (King 2018).

Lip filler lumps and nodules: early versus late

Lumps after lip filler are grouped by when they appear (Kroumpouzos 2023), and the timing is the first clue to the cause.

• Early bumps, in the first days to weeks. Swelling, bruising or product that has not settled. Many soften as the swelling goes down. A bead that is still there after a few weeks is usually filler placed as a bolus or too close to the surface.
• Delayed nodules, weeks to months later. A firm, sometimes tender lump that was not there before. In 400 patients treated with one hyaluronic acid filler in the lips or tear troughs, 4.25% had late inflammatory reactions, starting a mean of 8.4 weeks after injection, lasting up to 11 months and coming back a mean of 3.17 times; medical treatment with repeated high-dose hyaluronidase into the nodules was effective, and the authors note that rates differ between products (Artzi 2016). Across prospective studies of hyaluronic acid filler, delayed inflammatory reactions ran at about 1.1% per year (Chung 2020).
• Granulomas, months to years later. A reaction around the product, often hard and sometimes in both lips. In a systematic review of 66 cases of lip nodules, they appeared a mean of 35.2 months (2.9 years) after treatment, most of those biopsied were foreign-body granulomas, and silicone was the filler most often reported, followed by hyaluronic acid (Trinh, Surg J 2022).

Some lumps are not filler at all. In a high-frequency ultrasound series, lumps that patients felt from inside the lip were the lip's own small glands, pushed forward by filler deposits, granulomas or scar tissue (Skrzypek 2021). That is one reason the scan comes before any treatment.

Swelling that comes back months after lip filler

Lips that swell again months after filler, sometimes for days at a time and sometimes more than once, usually have a delayed reaction to the filler. Late-onset reactions typically appear three to four months after injection, occasionally much sooner (Baranska-Rybak 2024). The same expert consensus lists three proposed causes: the structure of the filler, infection introduced at injection or a dormant biofilm, and the body's immune response to conditions such as a viral infection; recent dental treatment is among the risk factors.

Which treatment comes first depends on the cause. The consensus recommends hyaluronidase for non-inflammatory reactions without active infection; for an inflamed reaction, watchful waiting or medical treatment may come first, and an infection needs drainage, a culture and medical treatment rather than hyaluronidase first (Baranska-Rybak 2024). More on this pattern is in swelling months after filler.

Lip filler migration and the 'filler moustache'

Migration means filler that has ended up outside the place it was meant to sit. In the lips, the pattern people notice most is filler above the upper lip border: a puffy shelf when the lips are relaxed, a blurred lip line, or a faint 'moustache' of fullness in some lights.

Filler often does not end up in the layer intended. In an ultrasound study of 126 people, the layer under the lip skin averaged less than a millimetre, hyaluronic acid filler had ended up within the lip muscle in most of those treated, and vertical injection techniques were linked with deeper deposits and signs of migration (Harris 2026). Migration is among the lip filler complications reported in the literature (Diwan 2023). Non-absorbable gels move too: polyacrylamide gel in the lips has been found spread into the lining of the lip and the skin around the mouth years after injection (Kastner 2018).

Ultrasound shows how far the filler extends, so the enzyme can be aimed at hyaluronic acid outside the lip rather than at the whole lip. More is in lip filler migration.

Silicone and other non-absorbable filler in the lips

Liquid silicone, polyacrylamide gel and PMMA have all been injected into lips, sometimes in large volumes and sometimes by unlicensed practitioners. None of them dissolves. Reported silicone complications, such as granulomas and disfiguring nodules, usually follow large-volume injection and/or industrial-grade or adulterated material (Narins 2006). Reactions to non-absorbable fillers may appear several years after injection and show little or no tendency to improve on their own (Requena 2011), and silicone is the filler most often reported in delayed lip granulomas (Trinh, Surg J 2022).

Dr Sin Yong maps silicone and other non-absorbable fillers in the lips with ultrasound and treats them with the Sculpting mode of Time Freeze Laser LCLR®, for nodules large and small, without an incision. A lump that is red, hot or tender is treated medically first. More is in silicone filler lumps and filler done overseas.

Ultrasound first: what the scan shows in the lips

High-frequency ultrasound shows where filler sits in the lip, how deep, whether some has moved beyond the border, and what a lump is likely made of. Hyaluronic acid, silicone and other materials look different on the scan, and so do granulomas and scar tissue: in a high-frequency ultrasound series, the scan told granulomas apart from persistent filler deposits and showed fibrosis, and the authors call it essential for choosing the right treatment (Skrzypek 2021).

A review of lip and perioral filler complications highlights ultrasound for finding and mapping filler and for watching hyaluronidase go into it in real time (Kroumpouzos 2023). Dr Sin Yong performs the scan himself, and the plan follows what it finds.

Dissolving lip filler: lumpy, overfilled or uneven lips

Most lip filler is hyaluronic acid, which can be dissolved with hyaluronidase, an enzyme that acts on hyaluronic acid only. For overcorrection or misplaced filler, a review of hyaluronidase use recommends a low dose injected directly into the palpable lump, and notes that hyaluronic acid products differ in how easily the enzyme breaks them down (Landau 2015). Dr Sin Yong dissolves lip filler in steps:

1. Allergy history. Reactions to bee or wasp stings, which raise the risk of allergy to the enzyme (Murray 2021), and any earlier hyaluronidase injections are asked about.
2. Skin test. Before planned dissolving, Dr Sin Yong always does a skin test: a small amount of hyaluronidase is injected just under the skin to check for a reaction.
3. A small first dose goes into the mapped lump, excess or migrated filler.
4. Review at about 48 hours, with any further dose titrated to what remains.
5. Refilling, if wanted at all, waits at least two weeks.

Overfilled lips are dissolved in stages, because dissolving more than the excess can leave the lips thinner than you want, and lips that have carried filler for years can look different once it has gone. Uneven lips are dissolved on the fuller side first and reviewed. Details are in lip filler dissolving.

Surgery on the lip to remove filler: what it involves

Removing filler from the lip means cutting into it, usually from the inside of the lip or along its edge. The lip is largely muscle, and its edge and fullness show every change, so the scar, the shape and the movement of the lip all have to heal well.

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The published reports are plain about the difficulty. Granulomas grow finger-like into the surrounding tissue, which is why a review of treatment options puts surgical excision last (Lemperle and Gauthier-Hazan 2009). In 11 patients who had polyacrylamide gel removed from the lips, the gel had spread through all three layers of the lip with scarring in every patient, could not be drawn out with a needle, and removal meant reconstructing the lip, with fat grafting in eight. The authors judged ten of the eleven outcomes aesthetically satisfying, but one patient had severe tissue loss in the upper lip, and gel left in the lining of the lip had to be accepted (Kastner 2018).

Get assessed before you agree to an operation: it can still be done later if it is ever needed, but it cannot be undone.

Tried other treatments and almost given up?

Many patients who come to see Dr Sin Yong about lip filler problems tell him they have tried almost everything else and had given up hope. Having tried other treatments does not mean nothing more can be done: what is done next depends on what the scan shows.

That history is useful. Knowing what was injected, when, and what has already been tried often explains why a problem has stayed: hyaluronidase acts only on hyaluronic acid and only where it reaches, some fillers are not hyaluronic acid at all, and swelling or fluid can look like filler. Ultrasound helps show which of these applies, and the plan starts from there. For material that cannot be dissolved, Dr Sin Yong uses the Sculpting mode of Time Freeze Laser LCLR® for nodules large and small, without an incision. How each person responds varies.

If you have been told nothing more can be done, it is still worth having the area scanned: ultrasound helps show what is there, and the plan is made from that. Bring any records of past treatments, product names and dates if you have them. More on this is in when filler dissolving has not worked.

How Dr Sin Yong treats lip filler gone wrong

Dr Sin Yong developed the Time Freeze Laser LCLR® protocol himself and performs every scan, every dissolving injection and every Sculpting mode treatment himself on Orchard Road. He has been invited to share his clinical expertise in Seoul, Dubai, Bangkok and São Paulo, including as a Global Key Opinion Leader.

He does not add filler to hide a lump or to even out lips that are already overfilled. The problem is dealt with first and the lips are reviewed once they have settled; only then is anything else discussed, including leaving them as they are. You do not need to have been treated here, and having no records of what was injected is fine. Lumps elsewhere in the face are covered in hard lumps after filler, and the laser in the Sculpting mode of Time Freeze Laser LCLR®.