Dermal Filler (Filler)
Hyaluronic acid filler fills deep lines, under-eyes, chin, temples, and lips, adding volume and shaping the face without surgery. The fill is visible right after injection, but there may be swelling that needs time to settle. It lasts about 6–18 months at Sanambinnam Clinic (คลินิกสนามบินน้ำ), Nonthaburi.
In brief: what is filler?
Dermal Filler (Filler) is a filling substance, mostly hyaluronic acid (Hyaluronic Acid / HA), which the body naturally produces. It is used to fill deep lines, restore volume, and shape the face in positions such as the under-eyes, chin, temples, and lips. The physician assesses the facial structure before choosing the positions and the appropriate amount. The result is visible immediately after injection and lasts about 6–18 months, depending on the position and the type of filler.
Reviewed by Dr. Net (หมอเน็ท) · Medical license ว.56133 · Updated 2026-06
Suitable for
- People with deep lines on the face, such as tear troughs, nasolabial folds, or lip lines
- People who want to fill hollow under-eyes
- People who want more volume in the chin, temples, or cheeks
- People who want to shape the face without surgery
How to verify genuine filler before the procedure
A question patients often ask is “how do I know the filler is genuine?” — what to check before every injection:
- Choose a clinic with a valid establishment licence and advertising permit, where procedures are performed by a physician with a professional licence
- The filler used must be a certified product with a verifiable registration number
- Ask to see the product box before the procedure starts, and always ask for the lot number (Lot) and the expiry date
- If you have any doubts about the product, message LINE or ask the medical team directly before the treatment day
Read the full practice guidelines in the Sanambinnam Clinic safety standards (Thai)
Consult a physician first / not suitable for
- People who are pregnant or breastfeeding
- People with a history of allergy to filler components
- People with an infection or inflammation at the injection area
- People with severe autoimmune disease
- People who have previously received permanent fillers (Permanent filler) should inform the physician
- People with a history of seafood allergy should inform the physician (some products may contain marine-derived ingredients)
What the physician assesses
- 1 Health history and current medications, including blood thinners
- 2 Facial structure, proportions, and the points to be adjusted
- 3 Skin condition, elasticity, and the thickness of the skin in the injection area
- 4 History of previous filler or filling-substance injections (type, position, outcome)
- 5 The patient’s expectations, so the physician can clearly explain the benefits and the limitations
Procedure steps
Assessment and planning
The physician assesses the face and explains the options, the appropriate amount, and the price.
Cleansing and numbing
The injection area is cleansed and a topical numbing cream is applied; wait about 20–30 minutes.
Filler injection
The physician injects filler at the planned points, using a blunt-tip needle or a cannula.
Gentle massage and assessment
The physician massages gently so the filler spreads evenly and assesses the shape after injection.
Aftercare advice
Aftercare is explained and a follow-up appointment is booked.
Timeline and expected results
| Timeframe | Expected results |
|---|---|
| Immediately after treatment | The change is visible immediately, but there may be slight swelling |
| 1–2 weeks | The filler settles, swelling decreases, and the shape becomes clear |
| 6–18 months | The result is gradually absorbed naturally, depending on the position |
| Procedure time | About 30–60 minutes (including numbing) |
Risks and side effects
Common (temporary)
- Slight swelling
- Bruising
- Slight pain/discomfort
- Redness at the injection site
Less common
- Lumps or unevenness of the filler
- Allergic reactions
- Blood vessel occlusion (when injected by someone without proper knowledge)
Filler compared with other options
| Option | Principle | Duration of effect | Suitable for |
|---|---|---|---|
| HA filler | Adds volume with hyaluronic acid | 6–18 months | Deep lines, volume restoration |
| Botox | Reduces muscle contraction | 4–6 months | Horizontal wrinkles, lip lines |
| Stamp microneedling | Stimulates collagen with tiny needle punctures | Results over several sessions | Enlarged pores, rough skin |
| Cosmetic surgery | Surgical reshaping of the face | Permanent | Those wanting major changes |
Frequently asked questions
What is filler?
Filler (Dermal Filler) is a skin-filling substance, mostly hyaluronic acid (Hyaluronic Acid), which is a substance already present in the human body. It is used to fill areas with deep lines, hollowness, or where more volume is wanted.
How long does filler last?
Hyaluronic acid filler usually lasts 6–18 months, depending on the injection site, the type of filler, and each person’s skin. Areas that move a lot, such as the lips, may be absorbed faster.
Does filler injection hurt?
There is some discomfort, but most fillers contain a numbing agent (Lidocaine) and the physician applies a topical numbing cream beforehand to reduce discomfort during the injection.
How should I care for myself after a filler injection?
After injection, avoid firm massage, pressing the injected area, saunas, heavy exercise, and alcohol on the first day. If there is swelling or bruising, cold compresses can help. Symptoms usually improve on their own within 1–2 weeks.
Is filler dangerous?
When injected by a physician with good knowledge and understanding, the risks of hyaluronic acid filler are low. Side effects that can occur include swelling, bruising, and pain at the injection site; in rare cases, blood vessel occlusion can occur, which the physician has ways to manage.
A note from Dr. Net
“Filler is one tool that restores the face well, but the most important thing is planning together between the physician and the patient. I focus on discussing which points you want adjusted, and on explaining the limitations honestly. Injecting in a way that suits each person’s facial structure is what I care about most.”
— Dr. Net, physician at Sanambinnam Clinic
Book a filler consultation
Sanambinnam Clinic — 421 Ngamwongwan Road, Bang Khen, Mueang Nonthaburi, Nonthaburi 11000
Call for inquiries/appointments: 086-464-2410
The clinic is open daily 10:30–20:00