Smile Line Filler in Seoul |
Apgujeong EU:GENES Skin Clinic
Deep smile lines can add years to an otherwise youthful face. At Apgujeong EU:GENES Skin Clinic, Dr. Jung Yoo-jin softens nasolabial folds by treating their cause, so your smile still looks like your own.
What is smile line filler?
Smile lines, or nasolabial folds, run from the sides of the nose to the corners of the mouth. Everyone has them to some degree, but they deepen as the midface loses volume and skin loses elasticity.
Smile line filler uses hyaluronic acid filler to soften these folds. Good results come not just from filling the crease itself, but from supporting the areas around it, which is why the doctor may also suggest treating the cheek.
Who is it for?
This treatment may suit you if:
- Your smile lines remain visible when your face is relaxed
- The folds make you look tired or older
- You notice a shadow beside the nose (often called a "nose-side hollow")
It is less helpful when folds are mainly caused by significant sagging, where lifting or collagen-building treatments may work better. Too much filler in the fold alone can look heavy and unnatural. Treatment is postponed during pregnancy or breastfeeding, active infection, or with a known filler allergy.
Benefits
- Softens deep folds for a fresher look
- Keeps natural expression when you smile
- Quick treatment with little downtime
- Can be combined with midface support
Your treatment at EU:GENES
During the 1:1 consultation, Dr. Jung looks at your face at rest and while smiling. She checks whether the fold is caused by volume loss in the cheek, a hollow near the nose, skin laxity, or a mix, since each needs a different plan.
Because the facial artery runs close to this area, precise technique matters. The doctor performs the injections personally, often combining deep support near the nose with softer product along the fold. She avoids overcorrection, which can create a puffy, "ridge-like" look when you smile. Aftercare instructions and WhatsApp follow-up are included.
Results and how long they last
The softening is visible straight away and settles over one to two weeks. For most patients, results last around 9 to 12 months, since this area moves every time you talk or smile. Supporting the cheek at the same time can help results last and look more natural.
Downtime, aftercare and possible side effects
Mild swelling, tenderness and small bruises are common for a few days. Avoid pressing or massaging the area, alcohol, saunas and intense exercise for 24 to 48 hours.
Possible side effects include lumps, asymmetry and prolonged swelling. The fold lies near the facial artery, so there is a rare risk of vascular occlusion. Careful, experienced technique reduces this risk. Contact us immediately if you notice severe pain or white or dusky skin.
Frequently asked questions
Will my smile look stiff?
No. Filler does not affect muscle movement, and a conservative approach keeps your expressions natural.
Can I treat smile lines without filler?
Yes. For skin laxity, options like HIFU lifting may help, and many patients combine approaches.
How is this different from marionette line filler?
Marionette line filler treats lines running down from the mouth corners, while smile lines run from nose to mouth. They are often treated together.
Book a consultation
Send photos for a free WhatsApp consultation, or view our Treatment Prices page. You can also explore our full range of dermal fillers.


