Quick answer: Under-eye filler treats hollow tear troughs, the dark grooves between the lower eyelid and cheek. A small amount of soft hyaluronic acid (HA) filler is placed deep under the skin, usually with a blunt cannula. It takes about 20 to 30 minutes, swelling settles in a few days, and results often last 12 months or longer.
Key takeaways
- Under-eye filler softens hollows and shadows that make you look tired.
- Very small amounts of soft HA filler are used.
- A blunt cannula is often used to reduce bruising and risk.
- It is not right for everyone, especially people with puffy bags or very thin skin.
- Results commonly last around 12 months or more.
What are tear troughs?
Tear troughs are the grooves that run from the inner corner of the eye down towards the cheek. With age, genetics or weight loss, this area can lose volume. The hollow creates a shadow, so you may look tired even after a good night's sleep.
Under-eye treatments are popular with visitors to Seoul. Korea treated about 2.01 million foreign patients in 2025, and around 63% came for dermatology, according to the Ministry of Health and Welfare. See our under-eye and facial filler page.
Who is a good candidate for under-eye filler?
- People with a visible hollow or groove under the eyes.
- People whose dark circles are mainly caused by shadow, not pigment.
- People with good skin quality and little puffiness.
Filler may not suit you if you have large under-eye bags, a lot of fluid swelling in the morning, or very thin, loose skin. In these cases, filler can make puffiness worse. Your doctor may suggest a skin booster such as Rejuran Eye, energy-based tightening or a surgical opinion instead.
Needle or cannula: which is better?
Both can be used. Many doctors prefer a blunt cannula for the under-eye area because it moves around blood vessels more easily, so bruising is usually less. A fine needle may be used for small, precise touches. Ask your doctor which technique they use and why.
What happens during treatment?
- Assessment: the doctor checks your under-eyes sitting up, in good light.
- Numbing: numbing cream is applied. The filler usually contains lidocaine.
- Injection: a small amount of soft HA filler is placed deep, close to the bone.
- Check: you look in a mirror. The doctor keeps the result subtle.
What is the recovery like?
- Day 0–2: mild swelling and possible small bruises.
- Day 3–7: most swelling settles.
- Week 2: the filler has settled. A follow-up check is helpful.
Sleep with your head slightly raised for the first night or two. Avoid rubbing your eyes, saunas, alcohol and hard exercise for a few days. You can usually fly after one to two days. See our low-downtime treatments before flying.
Is under-eye filler safe?
The under-eye area is delicate, so experience matters. Common side effects are swelling and bruising. Possible problems include lumps, a bluish tint if filler is placed too close to the surface, and long-lasting puffiness. Rare but serious risks include blocked blood vessels. HA filler can be dissolved with hyaluronidase if needed. Contact the clinic right away if you have severe pain, skin colour changes or vision problems.
How long does under-eye filler last?
Because the area moves less than the lips, under-eye filler often lasts 12 months or longer. Many people only need a small top-up after that.
What are the alternatives?
- Skin boosters: for thin skin and fine lines. See Rejuran Healer in Korea and treatments for crow's feet.
- Collagen stimulators: for gradual thickening. See our Juvelook guide.
- Lifting treatments: for mid-face sagging. See our Ultherapy Prime guide.
How to choose a clinic for under-eye filler
- Choose a doctor experienced in under-eye treatment.
- Ask which filler and technique will be used.
- Get a written quote and aftercare in English.
- Check that you can return for a follow-up before you fly.
Read our guide to choosing a dermatology clinic in Gangnam.
Frequently asked questions
Will under-eye filler remove dark circles?
It helps when dark circles are caused by shadow from a hollow. It does not remove brown pigment or visible blood vessels.
Does under-eye filler hurt?
Most people feel pressure more than pain, thanks to numbing and lidocaine.
How much filler is used?
Usually a small amount, often less than one syringe for both sides.
Can I combine it with other filler areas?
Yes. See dermal fillers in Seoul for a full-face approach.
Sources
- Ministry of Health and Welfare, Republic of Korea – 2025 foreign patient statistics (press release, 2026). mohw.go.kr
- U.S. Food and Drug Administration – dermal fillers (soft tissue fillers) information. fda.gov
This article is for general information only and is not medical advice. Results vary between individuals. Please consult a qualified physician before any treatment.
