What is under-eye filler treatment in Belgium?
Hyaluronic acid injections for dark circles — also known as tear trough fillers — are one of today’s most popular aesthetic procedures to refresh and brighten the under-eye area.
The treatment involves placing small amounts of a soft, light gel into the hollow beneath the eyes to restore lost volume, smooth the transition between the lower eyelid and the cheek, and reduce shadows that make the face look tired.
It’s a non-surgical treatment, usually taking 20–30 minutes, with results visible right away and no downtime.
Recent clinical studies involving over 2,500 patients have shown a satisfaction rate above 90%, with lasting improvement and very few side effects when performed by qualified injectors.
Hyaluronic Acid Fillers for Dark Circles in Belgium: Restore a Fresh, Rested Look Without Surgery
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Who is this treatment for?
Under-eye fillers are ideal for men and women who want to:
- Fill the hollow under the eyes caused by aging or bone/fat loss
- Reduce dark shadows and signs of fatigue
- Avoid surgery such as lower blepharoplasty
- Achieve a fresher, more awake look with a natural result
They are especially effective for hollow tear troughs, but not always suitable in cases of large eye bags or dark pigmentation — in those cases, other treatments such as laser, PRP, or surgery may be more appropriate.
Anatomy and injection technique
The under-eye area is anatomically complex: the skin is thin, blood vessels are close to the surface, and the space for product placement is limited.
For this reason, the injection must be performed with extreme precision by a doctor trained in facial anatomy.
Fillers are usually placed deep, near the bone, or injected using a micro-cannula (a blunt, flexible needle) to minimize the risk of bruising or vessel injury.
The process is slow, gentle, and involves tiny amounts of product distributed evenly to avoid lumps or swelling.
How does the session work?
- Assessment – The doctor examines the depth of the hollow, skin quality, and symmetry.
- Preparation – Cleansing and optional numbing cream.
- Injection – The filler is placed carefully with a cannula or fine needle.
- Gentle massage – To smooth and evenly distribute the gel.
- Follow-up – A check-up or touch-up may be planned after 2–3 weeks.
The session takes around 20–30 minutes, and you can return to your normal activities immediately.
Product choice and typical quantity
The fillers used for tear troughs are very light, smooth, and non-hydrophilic, meaning they don’t attract excess water (which could cause puffiness).
Commonly used products include:
- Restylane Eyelight®
- Teosyal Redensity II®
- Belotero Balance+®
- Juvéderm Volbella®
Only a small amount is needed — typically 0.3 to 1 ml per side, depending on the depth of the hollow and individual anatomy.
Results and duration
Results are visible immediately after the treatment: the under-eye area looks smoother, the shadows fade, and the face appears more rested.
The final result refines over a few days as mild swelling subsides.
Average duration: 6 to 12 months, sometimes up to 18 months depending on the filler, technique, and metabolism.
A light annual maintenance session helps preserve a natural, stable result.
Safety, risks, and precautions
The under-eye region is delicate, but when treated by an experienced doctor, the procedure is very safe.
Temporary side effects may include:
- Mild redness or swelling
- Small bruises
- Temporary tightness or tenderness
Rare but possible complications:
- Product migration
- Lumps or unevenness
- Blueish tint (Tyndall effect)
- In extremely rare cases, vascular occlusion
A 2023 meta-analysis covering over 2,500 patients confirmed a very low rate of serious complications (<1%), proving that this treatment is highly safe when performed correctly.
Alternatives to under-eye fillers
Depending on the cause of dark circles — hollowness, pigmentation, or skin laxity — your doctor may recommend other options or combination treatments:
- Fat transfer / nanofat (lipofilling) → uses your own fat for longer-lasting results
- PRP (Platelet-Rich Plasma) → regenerates tissue and improves skin tone
- Lower blepharoplasty → surgical correction for eye bags or displaced fat
- Laser, peel, or radiofrequency → smooths the skin and reduces fine lines
- Biostimulators (CaHA, PLLA) → tighten the skin and improve support without adding volume
In many cases, a combination approach (e.g., fillers + PRP or laser) gives the most natural and durable outcome.
Comparison: under-eye fillers vs. other facial areas
Under-eyes / tear troughs
Recommended filler → Light, non-hydrophilic, highly cohesive gel
Main goal → Fill hollows, reduce shadows, brighten the gaze
Cheeks / mid-face
Recommended filler → Medium-firm lifting filler
Main goal → Restore central facial volume, support the tear trough area
Chin
Recommended filler → Volumizing filler with medium to high density
Main goal → Project or elongate the chin, balance the profile
Jawline / lower face
Recommended filler → Dense, cohesive gel
Main goal → Define the jawline, correct early sagging
Price of under-eye fillers in Belgium
Prices depend on the brand and number of syringes used:
- Hyaluronic acid filler: €300–450 per syringe
- Full treatment for both under-eyes: typically €400–700
A prior consultation helps determine the right technique and estimate the total cost.
Who can perform filler injections in Belgium?
In Belgium, only licensed medical doctors are authorized to perform hyaluronic acid injections.
Aestheticians or nurses who are not doctors are not allowed to inject fillers — even under supervision.
This ensures proper product selection, safe technique, and immediate management of any possible complications.
Summary and recommendations
Under-eye fillers with hyaluronic acid are a safe and effective way to restore a fresh, rested appearance without surgery.
The treatment is quick, customizable, and reversible — the key is choosing a qualified, experienced injector.
The best results come from:
- Using the right filler consistency for your skin,
- Precise and conservative injection technique,
- A professional who values balance and subtlety.
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