Under-eye filler gone wrong, and only offered surgery? Get assessed first

Under-eye filler gone wrong, and offered surgery? Read this first

Patients come to Dr Sin Yong after being told that under-eye filler has to be cut out, that eyelid surgery is the answer, or that nothing more can be done. Before you agree to an operation, 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.

On the lower eyelid there is more. Scar tissue can pull the lid down or turn it outwards, and a second operation on a scarred eyelid is harder than the first. The facts are set out in lower-eyelid surgery for filler 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 the filler with ultrasound, dissolves hyaluronic acid, and treats collagen stimulators, fat and silicone with the Sculpting mode of Time Freeze Laser LCLR®, without an incision.

What goes wrong with under-eye filler

Most problems after under-eye filler fall into a few patterns, and many people have more than one.

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Puffiness is the commonest delayed problem after tear trough filler (Trinh, Facial Plast Surg 2022). Late swelling around the eyes after hyaluronic acid filler, once rare, is now described as common: it can start weeks to years after the injection, spread across the eyelids and upper cheek, and flare with triggers such as an infection (Eshraghi 2024). More on this pattern is in swelling months after filler.

The blue tint comes from gel sitting too superficially: hyaluronic acid placed too close to the surface can show through the skin as a discoloration, known as the Tyndall effect (Hirsch 2006). It does not fade like a bruise, because the gel is still there. A dedicated guide covers the blue tint after under-eye filler.

“Dissolving filler is not an undo button.”

Dr Sin YongOn what dissolving can and cannot do

How often under-eye filler goes wrong, and how late

Most under-eye filler problems are mild, but they are not rare, and the figures depend on how closely and how long people are followed.

• Across published studies. A meta-analysis of 31 reports covering 2,556 people found swelling in 19.2%, bruising in 18.4%, a lump or uneven contour in 5.3% and a blue tint in 0.9% (Liu 2023).
• With at least five years' follow-up. In 147 people, masked grading of photographs found malar oedema in 11%, a blue-grey tint in 31.3% and an uneven contour in 30.5%; about nine in ten of these problems were mild and needed no treatment (Mustak 2018).
• Delayed problems. A systematic review of 52 people with delayed complications after tear trough filler found swelling in 42% and lumps in 25%, with migration and discoloration also reported, on average 16.8 months after the injection (Trinh, Facial Plast Surg 2022).
• At an ultrasound reference centre. Among 52 non-vascular problems after hyaluronic acid filler, the area under the eye was the commonest site (23%) and the blue tint the commonest problem (25%); migration and overcorrection were also seen (Gonzalez 2024).

A problem that appears a year or more after the injection is a recognised pattern, and it is assessed in the same way.

Why the under-eye is so unforgiving

The infraorbital hollow has been described as the area of the face most prone to filler problems, and malar oedema as a significant, long-lasting and frequently reported problem there (Funt 2011). Three things make it unforgiving:

• Thin skin. Eyelid skin is among the thinnest on the body, with little fat beneath it, so a small bead of filler or a superficial layer of gel shows.
• Poor drainage. Between two ligaments of the upper cheek lies a compartment whose lymphatic drainage is poor. Expert recommendations list a high volume of filler and placement superficial to the malar septum among the technique risks for malar oedema, and older age, earlier surgery around the eyes, allergies, infection and some general medical conditions among the personal ones (Baranska-Rybak 2026).
• Little room for error. A volume that would pass unnoticed in the cheek can show under the eye as a ridge, a bead or a bag.

Filler may also press on the small veins that drain the area. In 26 eyes with swelling after filler, ultrasound placed the filler within the SMAS layer in 23, and the authors propose that filler pressing on veins and lymphatics may cause the swelling (Schelke, J Cosmet Dermatol 2023).

Under-eye filler migration: years later, and into the eyelid

Filler does not always stay where it was placed. Under the eye, migrated filler shows as fullness creeping up into the lower eyelid, a puffy band along the lashes, or swelling spreading onto the cheek.

Hyaluronic acid can last far longer than people are often told. In patients whose swelling around the eyes began years after the injection, the hyaluronic acid had persisted for up to nine years and had spread into more superficial layers without inflammation, and the swelling could be mistaken for serious disease (Chang 2017). Migration is among the delayed problems reported after tear trough filler (Trinh, Facial Plast Surg 2022), and it was seen at an ultrasound reference centre alongside overcorrection (Gonzalez 2024).

Because migrated filler can look like eye bags, an allergy or a problem with the eyelid itself, the scan matters: it shows whether the fullness is filler, how far it has spread and how deep it sits. Migrated hyaluronic acid is dissolved where it lies. Migration elsewhere in the face is covered in filler migration.

Ultrasound first: what the scan shows under the eye

High-frequency ultrasound shows where under-eye filler sits, how deep, whether there is one pocket or several, whether it has spread into the eyelid, and which vessels run beside it. It also shows what the material is likely made of, because hyaluronic acid, collagen stimulators, fat and silicone look different on the scan, and it shows when a bulge is fluid or the eye's own fat rather than filler.

That changes the plan. In eyes with swelling after filler, removing the filler under duplex ultrasound guidance was followed by restored venous flow and less swelling (Schelke, J Cosmet Dermatol 2023). At an ultrasound reference centre, ultrasound with Doppler helped avoid unnecessary treatment (Gonzalez 2024), and a review of late swelling around the eyes describes ultrasound as a guide to treatment (Eshraghi 2024).

Dr Sin Yong performs the scan himself, and the plan follows what it finds. Sometimes the scan shows that nothing needs dissolving at all.

Dissolving under-eye hyaluronic acid: skin test, small doses, review

Most under-eye filler is hyaluronic acid, which can be dissolved with hyaluronidase, an enzyme that acts on hyaluronic acid only. Under the eye, Dr Sin Yong dissolves 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. It is never allowed to delay treatment in an emergency such as a blocked blood vessel.
3. A small first dose goes into the mapped filler, aimed at the excess rather than the whole lower eyelid, and the dose is titrated to the filler and the area (King 2018).
4. Review at about 48 hours, once the enzyme has acted, with any further dose based on what remains.
5. Refilling, if wanted at all, waits at least two weeks.

Dissolving more than the excess can leave a hollow, and whatever the filler was hiding, such as a hollow, a dark circle or an eye bag, can show again once it has gone. That is why the dose is small and staged. Step-by-step detail is in under-eye filler dissolving, and the skin test in hyaluronidase allergy and the skin test.

Collagen stimulators, fat or silicone under the eyes

Hyaluronidase has no effect on poly-D,L-lactic acid (Juvelook), poly-L-lactic acid (Sculptra), polycaprolactone (Ellansé), calcium hydroxylapatite (Radiesse), fat graft, silicone or other non-absorbable fillers. Under thin eyelid skin these lumps show easily, and patients with them are often told they must be cut out.

Dr Sin Yong maps them with ultrasound and treats them with the Sculpting mode of Time Freeze Laser LCLR®, for nodules large and small, without an incision. Around the eyes he keeps the laser settings conservative and uses eye protection. Where hyaluronic acid sits with other material, as it often does after several treatments, the hyaluronic acid is dissolved first and the rest is treated with the Sculpting mode.

More is in Juvelook lumps, correction after fat grafting and under-eye filler lumps and nodules.

Lower-eyelid surgery for filler: what it involves

Surgery to remove filler or fat from under the eye is an operation on the lower eyelid. It is done through a cut just below the lashes, which heals as a fine scar, or through the inside of the eyelid. Either way, filler that has spread through the eyelid tissue is hard to separate from it, and the eyelid has to heal in the right position.

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The published cases show why revision is hard. After fat was placed in the tear troughs, the surgery to repair the lower-lid deformity that followed was described as very difficult and led to a temporary outward-turned lower eyelid (ectropion) along the way, before the patient was satisfied (Spector 2008). When fat nodules in the tear trough were removed through the inside of the eyelid, 29 of 33 patients were satisfied, but a localised dent was reported in 18.18% and 3 of 66 eyelids needed a second procedure (Li 2024). In a published case of granulomas in both lower eyelids after poly-D,L-lactic acid, saline, radiofrequency and medical treatment injected into the lumps did not settle them, the injections thinned the skin, and two operations were needed (Garlaschi 2026).

Where surgery is wanted for the eyelid itself, such as eye bags, a review of late swelling around the eyes places lower-eyelid surgery after the hyaluronic acid has been dissolved (Eshraghi 2024). Get assessed before you agree to an operation: it can still be done later if it is ever needed, but it cannot be undone.

When to act at once

Most under-eye filler problems are not emergencies, but some are. A lump or swelling that is red, hot, painful or growing, especially with a fever, can be inflammation or infection, and it is treated medically first, before any dissolving or laser. Late swelling can flare with triggers such as an infection (Eshraghi 2024). Do not press hard on an under-eye lump or try to break it up yourself.

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.

Tried other treatments and almost given up?

Many patients who come to see Dr Sin Yong about under-eye 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 under-eye 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 more filler to disguise a puffy or lumpy under-eye. The excess is dealt with first, the area is reviewed once it has settled, and only then is anything else discussed, from treating the skin to leaving it alone. You do not need to have been treated here, and having no records of what was injected is fine. More on the laser is in the Sculpting mode of Time Freeze Laser LCLR®.