Tear trough filler is generally safe when injected by a qualified, anatomy-trained practitioner, but it carries real risks ranging from common bruising and swelling to rare, sight-threatening vascular events. Some complications show up within days, while others, like persistent puffiness or lumps, can appear months later and need different treatment. This guide walks through the statistics, warning signs, and steps that lower your risk.
TL;DR:
- Most minor side effects, such as bruising and swelling, resolve within one to two weeks, but persistent puffiness can develop weeks or months later.
- Delayed complications like lumps, nodules, or malar edema can appear over a year after treatment, requiring careful assessment to exclude infection or filler migration.
- Proper placement of filler deep under the muscle and conservative volumes reduce risks, especially in patients with thin skin, previous eyelid surgery, or underlying edema.
- Choosing a qualified, experienced practitioner with proper training in facial anatomy and emergency protocols significantly lowers the chance of serious adverse events.
Table of Contents
- Common short-term side effects and expected recovery
- Persistent puffiness, lumps, and delayed complications
- Rare but serious risks: vascular occlusion and vision loss
- How complications are diagnosed and treated
- Who should think twice before treatment
- Checking your practitioner’s qualifications and training
- Why anatomy-first, staged treatment matters most
- A safety-first option if you’re ready to book
- Sources
- FAQ
Common short-term side effects and expected recovery
Most people who get tear trough filler notice mild swelling, bruising, or tenderness in the days after treatment. A 2021 systematic review of 1,956 patients found minor side effects in 44% of cases, a figure that includes swelling, bruising, and mild lumps rather than anything serious. A larger 2023 study cited in the same review found that 83% of patients had no complications at all, while 10% reported swelling, 4.3% bruising, and 4.6% contour irregularities. These numbers frame the tear trough as an area where minor reactions are common but manageable.
One specific issue worth knowing about is the Tyndall effect, a bluish or gray discoloration under the skin. It happens when hyaluronic acid gel is placed too close to the surface, and light scatters through it differently than it does through skin. Deep placement below the muscle, rather than just under the skin, is the main way practitioners prevent it.
Simple aftercare reduces the severity and duration of routine effects:
- Sleep with your head slightly elevated for the first two to three nights to limit fluid pooling.
- Apply cold compresses in short intervals during the first 24 to 48 hours to reduce swelling and bruising.
- Avoid strenuous exercise, alcohol, and saunas for around 48 hours, since heat and increased blood flow can worsen swelling.
- Contact your clinic if bruising or swelling worsens after day three instead of improving, since that pattern can signal something beyond a normal reaction.
Most bruising fades within one to two weeks, while mild swelling can take slightly longer given how hydrophilic hyaluronic acid gels are, meaning they naturally attract and hold some fluid.
Persistent puffiness, lumps, and delayed complications
Not every complication shows up right away. Malar edema, a persistent puffiness under the eyes that does not resolve like normal swelling, can develop weeks or months after treatment. It happens because the area sits near the malar septum, a structural boundary that can trap fluid and compromise local lymphatic drainage once filler is introduced nearby. Some ophthalmologic sources report malar edema in up to around one in ten cases in certain series, and it can worsen gradually rather than settle on its own.
A 2021 review of delayed complications found delayed swelling in 42.3% of delayed cases and lumps or nodules in 25.0%, with an average onset of 16.8 months after treatment. That timeline matters: a lump appearing over a year after injection is not automatically a sign of infection or a technical error, but it does need proper assessment rather than being dismissed.
Distinguishing an inflammatory nodule from an infected one relies on a few signs:
- Firmness with mild tenderness and no redness usually points to inflammation or a foreign-body reaction.
- Warmth, spreading redness, or fluctuation under the skin suggests possible infection or biofilm, a bacterial layer that can form on filler months after placement.
- Sudden growth or pain out of proportion to the area warrants urgent clinical review rather than waiting.
Management depends on the cause. Inflammatory nodules often respond to hyaluronidase, the enzyme that dissolves hyaluronic acid filler. Suspected biofilm infections typically need a course of antibiotics before any dissolving is attempted, since breaking up the gel too early can spread bacteria. Staged revision, treating in small steps rather than all at once, tends to give more predictable results than an aggressive single correction.
Rare but serious risks: vascular occlusion and vision loss
The rarest but most serious risk with tear trough filler is vascular occlusion, where filler is accidentally injected into or compresses an artery, cutting off blood flow. When this happens near vessels connected to the eye, it can cause vision loss. An Ophthalmic Technology Assessment from the American Academy of Ophthalmology documented 198 cases of filler-related vision loss, most involving hyaluronic acid and central or upper midface injection sites. A 2025 to 2026 meta-analysis put the pooled proportion of permanent vision loss at around 0.57 per 100 documented occlusion cases, underlining how rare it is relative to the volume of treatments performed, while also confirming it can happen.
Warning signs require immediate action, not a wait-and-see approach:
- Sudden, severe pain during or right after injection that feels disproportionate to a typical needle stick.
- Skin blanching, a whitening or mottled discoloration spreading from the injection site.
- Visual disturbance, including blurred vision, sudden floaters, or partial vision loss.
Pro Tip: If you notice any of these signs after treatment, call your clinic immediately rather than waiting to see if symptoms pass. Time matters more than caution here.
A prompt clinical response typically involves high-dose hyaluronidase injections and urgent ophthalmology referral, though the same assessment notes that interventions do not reliably reverse vision loss once it occurs.
How complications are diagnosed and treated
Treating filler complications depends heavily on catching them early and identifying the right cause. Hyaluronidase remains the primary tool for hyaluronic acid fillers, breaking down the gel within hours when there’s a suspected vascular problem, though it works best when given promptly rather than after tissue damage has set in.
When infection is suspected, particularly with a delayed lump that’s warm or tender, clinicians typically consider oral or intravenous antibiotics targeting common skin bacteria before attempting any dissolution. Drainage or specialist referral becomes necessary if there’s a fluctuant abscess or the infection doesn’t respond to initial antibiotics.
For harder-to-locate lumps or suspected filler migration, ultrasound imaging helps practitioners see exactly where the product sits before dissolving it. This guided approach, sometimes done in stages, gives more control than blind injection of hyaluronidase and is especially useful for overfilled or migrated filler. Reconstructive or surgical referral is reserved for the rare cases involving tissue damage or necrosis that filler dissolution alone cannot fix.
- Hyaluronidase for suspected vascular compromise or unwanted lumps from hyaluronic acid filler.
- Antibiotics when infection or biofilm is suspected, often before any attempt to dissolve the product.
- Ultrasound-guided assessment when the exact location or extent of filler is unclear.
Who should think twice before treatment
Certain anatomical features raise the risk of complications. Very thin under-eye skin, existing puffiness or periorbital edema, previous eyelid surgery, or a history of filler reactions all call for extra caution and, sometimes, a different treatment plan altogether.
Technique choices matter as much as candidacy. Practitioners commonly recommend conservative volumes, often under 0.3 mL per orbit, placed deep and using a cannula rather than a needle to reduce vessel injury and bruising.
- Thin, translucent skin or pre-existing under-eye bags increase the visible impact of any swelling or Tyndall effect.
- Low-elasticity, softer hyaluronic acid gels tend to integrate more naturally in this delicate area than firmer products designed for cheeks.
- Treating the tear trough in isolation, without addressing volume loss in the adjacent cheek, can produce an unnatural result even when the injection itself goes well.
Pro Tip: Ask your practitioner why they’ve chosen a specific product and volume for your anatomy, not just for the tear trough in general.
Checking your practitioner’s qualifications and training
The single biggest factor in reducing tear trough filler risk is who holds the needle. A few checks before booking make a real difference:
- Confirm the practitioner is a registered medical professional with documented training in facial anatomy, not just a short filler course.
- Ask whether the clinic stocks emergency medicines, including hyaluronidase and adrenaline, and has a written protocol for vascular emergencies.
- Check that consent and aftercare are documented in writing, with a clear way to reach the clinic urgently if something feels wrong.
Regulatory oversight in this space is still catching up. A recent government consultation on non-surgical cosmetic procedures recommended stronger licensing and higher training standards, alongside a related announcement on cracking down on unsafe cosmetic procedures, both aimed at areas like this one where the margin for error is small. Treat low-cost, high-volume offers with skepticism if they come without a clear emergency plan or thorough consultation.
Why anatomy-first, staged treatment matters most
The tear trough rewards restraint. A conservative, anatomy-led approach, small volumes, deep placement, cannula technique, tends to produce fewer complications and results that age better than an aggressive single session. Good candidacy assessment and staged correction matter more than the product used.
At Thegoodskinclub, treatments are delivered by Dr Lydia Pavey, a level 7 qualified medical doctor, with consultation time built in to assess anatomy properly before any injection happens.
— Anthony
A safety-first option if you’re ready to book
Choosing where to have tear trough filler done matters as much as understanding the risks. Some clinics offer treatments performed by a GMC-registered doctor, with an anatomy-first approach across clinics in London and South Oxfordshire.
What a consultation typically covers before any injection:
- A full assessment of under-eye anatomy, prior treatments, and realistic expectations.
- A discussion of product choice and conservative volume planning specific to your face.
- Clear aftercare guidance and a direct way to reach the clinic if concerns come up afterward.
If you’re weighing your options, you can view dermal filler treatments and book a consultation to discuss whether tear trough correction is right for you, including a look at typical cost ranges for the procedure.
This article is general information, not a substitute for advice from a qualified doctor. Consult a qualified healthcare professional about your own circumstances before acting on anything here.
Sources
- Complications of Periorbital Cosmetic Hyaluronic Acid Filler … — PMC
- Delayed complications of tear trough filler — PubMed
- Systematic review of facial dermal filler complications — F1000Research
- Ophthalmic Technology Assessment: Ocular complications of injectable fillers — AAO
FAQ
Are under eye fillers risky?
Under eye fillers carry a real but generally low risk profile, with most people experiencing only mild, short-term effects like bruising or swelling. A 2021 review found minor side effects in 44% of cases, while serious complications such as vision loss remain rare.
What is the riskiest place for fillers?
The central and upper midface, including the glabella and areas near the tear trough, carry higher risk for vascular complications because of dense blood vessel networks connected to the eye. The AAO assessment found most documented vision-loss cases involved these zones.
What happens if tear trough fillers go wrong?
Depending on the issue, outcomes range from temporary bruising and swelling to persistent puffiness, lumps, or, rarely, vascular occlusion affecting vision. Prompt treatment with hyaluronidase and, when needed, urgent ophthalmology referral gives the best chance of resolving serious complications, though the AAO assessment notes vision loss is not always reversible.
Do tear troughs get worse with age?
Yes, tear troughs typically deepen with age as fat pads shift and skin loses elasticity, which is part of why the area is commonly treated with filler. This natural progression also means results and risk factors should be reassessed at each treatment rather than assumed to stay the same over time.
