Under Eye Fillers When to Use and Not to Use

Under eye filler (also called tear trough filler) is a non-surgical injectable treatment designed to soften the hollow between the lower eyelid and upper cheek. By restoring a small amount of volume, it can reduce shadowing that makes people look tired, and it can create a smoother transition from the eyelid to the cheek. Most clinics use hyaluronic acid (HA) filler in this area because it can be adjusted conservatively and, if needed, dissolved with hyaluronidase.

At the same time, the under-eye is one of the highest-skill filler areas in aesthetics: the skin is thin, swelling is common, and the anatomy is complex. Done well, results can be subtle and elegant. Done poorly, it can create long-lasting puffiness, irregularity, or—very rarely—serious complications such as vascular occlusion and vision loss. 

Under eye fillers (tear trough fillers): a small-volume injection, usually of hyaluronic acid gel, placed along the tear trough/infraorbital region to improve hollowness and reduce the appearance of tired-looking eyes caused by shadowing. 

Who is under eye filler best for?

Under eye filler tends to work best when the “problem” is mainly shape and shadow, rather than skin colour or true eye-bags.

You’re more likely to be a good candidate if you have:

• A visible hollow/indent under the eye that creates a shadow

• Good skin quality (not very crepey or very lax)

• Minimal under-eye puffiness at baseline

• A stable lifestyle factor (sleep, allergies, hydration) that isn’t the main driver of the issue

Many expert injectors emphasise that under-eye filler should be used sparingly, and that improving the midface/cheek support can sometimes reduce how much filler is needed directly under the eye. 

When under eye filler is not the right answer

Under eye filler is often not ideal if you mainly have:

1) Pigmentation (“brown” dark circles)

If the darkness is mostly melanin (genetic or post-inflammatory) or surface vessels showing through thin skin, volume restoration alone may not fix it. Many consumer and clinic guides point out that tear trough filler is best for hollowness, not pigmentation. 

Better options may include: medical-grade skincare, targeted pigment treatments, vascular lasers, or camouflage strategies depending on cause.

2) True eye bags / fat prolapse

If the issue is a prominent fat pad (“bags”), adding volume below it can sometimes make the area look heavier. In some patients, surgery (lower blepharoplasty) or skin tightening may be a more predictable solution such as Accutite.

3) Chronic puffiness or lymphatic congestion

This is a big one. The under-eye region can retain fluid easily, and filler can worsen or prolong swelling in some people (for example malar oedema). 

4) Very thin skin with high risk of the “Tyndall effect”

If filler is placed too superficially in thin skin, it can create a blue-grey hue (light scattering). This is technique- and product-dependent.

What causes “dark circles” and tired-looking eyes?

It helps to break the under-eye appearance into four common contributors:

1. Volume loss (hollowness / tear trough indentation)

2. Skin quality (thin, crepey skin; dehydration; sun damage)

3. Pigmentation (genetic, post-inflammatory, or melasma-like changes)

4. Fluid and fat (puffiness, bags, allergies, sinus congestion, ageing fat prolapse)

Under eye filler mainly targets (1) and sometimes improves the look of (4) only when puffiness is minimal.

What product is used for under eye fillers?

Most reputable injectors use hyaluronic acid (HA) filler in the tear trough because:

• It can look smooth and natural when placed correctly

• It is temporary

• It can be dissolved with hyaluronidase if there is swelling, irregularity, or overcorrection 

What happens at a CLNQ consultation?

Our trained doctors offer a consultation for under eye filler which should feel medical, not sales-driven. Typically, it includes:

• A discussion of your goals (freshness, symmetry, brightening)

• Assessment of skin quality, tear trough depth, malar support, and baseline puffiness

• A frank conversation about risks and alternatives

• A plan that may include:

  • Under-eye filler and/or

  • Cheek/midface support first

  • Skin treatments (hydration, collagen stimulation, pigment management)

How the procedure is usually performed

At CLNQ, we would undertake the procedure in the following steps:

1. Photography and Consent

2. Cleansing and antiseptic prep

3. Optional topical anaesthetic

4. Injection using either:

   • A cannula (blunt tip) via an entry point, or

   • A fine needle with very conservative placement (injector dependent)

5. Micro-aliquots (tiny amounts) and reassessment between passes

6. Post-treatment advice and an optional review appointment

Many complications correlate with overfilling. In a peer-reviewed study of tear trough filler technique, higher injected volume was significantly associated with oedema and contour irregularities—one of the reasons experienced injectors stay conservative. 

Downtime and what results look like

You can usually return to normal daily activity quickly, but it’s sensible to expect:

• Mild tenderness for 24–48 hours

• Possible bruising (a few days, occasionally longer)

• Swelling that settles over several days (and sometimes a couple of weeks in swelling-prone patients)

Results are often:

• Immediate in shape improvement, with refinement as swelling settles

• Best judged at 2–4 weeks rather than the next morning

Longevity is variable. Many public-facing medical and consumer sources quote something in the region of 6–18 months, depending on product, placement, metabolism, and how much was used. 

The risks and side effects

Most side effects are minor and settle on their own, such as:

• Redness

• Bruising

• Swelling

• Tenderness

• Temporary asymmetry 

Specific under-eye risks to understand

1) Persistent swelling / malar oedema

This can be more than a “few days of puffiness” and may last weeks or longer in susceptible patients. It’s discussed widely because the under-eye and upper cheek have delicate lymphatic drainage pathways. 

2) Lumps, contour irregularity, or visible product

Often linked to product choice, placement depth, and using too much filler. 

3) Tyndall effect (blue-grey discolouration)

Typically when HA filler is too superficial.

4) Delayed inflammatory reactions / nodules (uncommon)

Dermal filler adverse event reviews describe delayed issues such as nodules, inflammation, and other late reactions, which require proper assessment and management rather than guessing at home. 

5) Vascular occlusion (rare but serious)

This is when filler inadvertently compromises blood flow. Evidence-based guidance exists for recognising and managing HA filler vascular occlusion, and this is exactly why your injector should have robust protocols and emergency preparedness. 

6) Vision loss (very rare, but real)

Filler-associated blindness is rare, but it is documented in the medical literature. Systematic reviews and case analyses describe vision loss events associated with soft tissue fillers (including HA). While uncommon, it’s a key reason to choose an experienced medical injector with excellent anatomical knowledge and complication management capability. 

How to make under eye filler safer 

If you’re comparing clinics (and trying to avoid a poor outcome), prioritise:

• A practitioner with deep facial anatomy knowledge and specific tear trough experience ideally a doctor who understands anatomy

• A conservative philosophy (“less is more” under the eyes) 

• A clear pathway for:

  • Review appointments

  • Managing swelling

  • Use of hyaluronidase when appropriate 

• Proper consent that discusses both common and rare risks, including vascular occlusion/vision risk 

Aftercare: what to do 

Typical aftercare guidance includes:

For the first 24–48 hours

• Avoid heavy exercise

• Avoid alcohol (it can worsen bruising)

• Avoid excessive heat (saunas/steam rooms)

• Don’t massage the area unless your clinician tells you to

To reduce bruising/swelling

• Cool compresses (gently, short periods)

• Sleep slightly elevated for a night or two

Avoid

• Make-up immediately after if advised (varies by clinic protocol)

• Blood-thinning meds/supplements unless medically necessary (always check with your GP/pharmacist first)

Alternatives to under eye filler (often better for the right patient)

If filler isn’t ideal, alternatives may give a safer or more predictable outcome:

• Skincare optimisation (retinoids, pigment strategies, barrier repair)

• Energy-based treatments such as Accutite for skin texture (selected cases)

• Polynucleotides/skin boosters (for skin quality rather than volume)

• Midface/cheek support instead of direct tear trough filling (selected anatomy) 

• Lower eyelid surgery (blepharoplasty) if true bags or excess skin are the dominant issue

A good clinic will talk you out of filler if you’re not a good candidate.

FAQs about under eye fillers

How long do under eye fillers last?

Commonly quoted longevity is around 6–18 months, depending on the product, how much was used, and your individual metabolism. 

Will under eye filler get rid of dark circles?

It helps most when “dark circles” are actually shadows from hollowness. If the darkness is mainly pigmentation, you may need a different plan. 

Is under eye filler dangerous?

Most people only experience mild, temporary side effects like swelling or bruising. However, rare serious risks exist (including vascular occlusion and extremely rare vision loss), which is why injector experience and safety protocols matter. 

What is malar oedema?

Malar oedema is persistent puffiness in the upper cheek/under-eye area that can occur when lymphatic drainage is disrupted, sometimes after under-eye filler. Some people are more prone to it than others. 

Can under eye filler be dissolved?

If a hyaluronic acid filler was used, it can usually be dissolved with hyaluronidase when clinically appropriate. 

What should I avoid after tear trough filler?

Common advice includes avoiding heavy exercise, alcohol, heat exposure, and rubbing/massaging the area for 24–48 hours (unless your clinician instructs otherwise).

Who should not have under eye filler?

People with significant eye bags, marked skin laxity, chronic puffiness, or those whose main issue is pigmentation often do better with alternatives.