What Are Nasolabial Folds and Why Do They Appear?

Nasolabial folds, also known as smile lines, are the natural creases that extend from the sides of the nose down to the corners of the mouth.
As we age, skin loses elasticity and volume, and the repeated movement of facial muscles makes these lines deeper and more visible.

Hyaluronic acid (HA) fillers help to soften and fill nasolabial folds in a natural way, restoring support and smoothness without surgery.
The goal isn’t to erase all lines, but to bring back balance and freshness while preserving your natural expression.

Find a certified clinic in Belgium specialized in facial rejuvenation →

Why Choose Hyaluronic Acid Injections for Nasolabial Folds?

This treatment is ideal for women and men who want to:

• Reduce visible smile lines and soften deep folds;
• Restore volume to the mid-face for a more youthful look;
• Refresh their expression without surgery;
• Prevent the folds from deepening over time.

The procedure can be done on its own or combined with cheek, chin, or marionette line fillers for a harmonious overall result.

Injection Technique and Choice of Filler

The nasolabial area is very mobile and contains important facial vessels, which makes precise technique essential.

Injection method:

• Deep injections at the base of the fold to restore structure and lift;
• Superficial passes to smooth the skin and refine the result;
• Use of soft micro-cannulas to reduce bruising and enhance safety.

Type of filler used:

• Medium-consistency hyaluronic acid fillers, soft but with good lifting capacity;
• Common options: Juvéderm Volift®, Restylane Defyne®, Teosyal RHA 3®, Belotero Intense®;
• These gels integrate naturally into the tissue while improving hydration and elasticity.

Results of Hyaluronic Acid Fillers for Nasolabial Folds

Results are visible immediately after treatment: the folds are softened, facial contours look refreshed, and the overall expression becomes lighter and more youthful.
The effect refines over several days as the filler integrates naturally into the skin.

• Average longevity: 12 to 18 months, depending on the product and individual metabolism.
• A yearly touch-up is generally enough to maintain natural, balanced results.

Safety and Possible Side Effects of Nasolabial Fold Fillers

Hyaluronic acid injections for nasolabial folds are safe when performed by an experienced medical professional.

Possible mild side effects include:

• Temporary redness or swelling;
• Light bruising or sensitivity at the injection site.

More serious complications (product migration, vascular occlusion, nodules) are very rare and usually linked to incorrect technique.
Choosing a qualified doctor trained in facial anatomy minimizes these risks significantly.

Volume and Price of Hyaluronic Acid Injections for Nasolabial Folds

The required volume depends on how deep the folds are and on facial structure:

• Mild folds → about 1 ml total (0.5 ml per side)
• Moderate folds → about 1.5 to 2 ml total
• Deep folds → up to 3 ml, often divided over two sessions for gradual and natural correction

💶 Indicative price in Belgium: €250 to €1100 per session, depending on:

• The amount of filler used (deeper folds require more product);
• The filler brand (Juvéderm®, Restylane®, Teosyal®, Belotero®);
• The injector’s experience and the clinic’s reputation.

Who Can Perform Hyaluronic Acid Injections in Belgium?

In Belgium, only licensed medical doctors are authorized to perform hyaluronic acid injections.
Beauticians, nurses, or non-medical staff are not allowed to inject fillers, even under supervision.
This rule ensures patient safety, sterile technique, and medical-quality results.

Comparison: Hyaluronic Acid Fillers for Nasolabial Folds and Other Facial Areas

Nasolabial Folds
Filler → Medium-density HA filler, flexible but lifting.
Goal → Reduce fold depth from the nose to the mouth and soften facial lines.

Marionette Lines
Filler → Medium-to-firm filler.
Goal → Lift downturned mouth corners and restore a relaxed expression.

Cheeks
Filler → Volumizing filler.
Goal → Rebuild mid-face support and relieve tension on nasolabial folds.

Chin
Filler → Structural filler.
Goal → Improve lower-face definition and balance facial proportions.

Summary and Recommendations on Hyaluronic Acid Fillers for Nasolabial Folds

Nasolabial fold fillers are among the most popular injectable treatments in aesthetic medicine.
They help smooth smile lines, rejuvenate facial balance, and restore a naturally rested look — all without surgery.

The key to a beautiful result lies in the precision of the technique and the right amount of filler.
A well-performed treatment doesn’t freeze your features — it restores freshness and harmony.

Want to soften your smile lines safely and naturally?
Find a verified clinic offering hyaluronic acid fillers for nasolabial folds →