Filler, or soft-tissue augmentation material, is an injectable substance doctors use to add volume, adjust proportions, reduce shadowing from deep folds, or support facial structure. Hyaluronic acid (HA) filler is a widely used group because its softness, elasticity, and support can be chosen to suit each position, and it can be dissolved with hyaluronidase enzyme when there is an indication to do so. That said, the ability to be dissolved does not make injection free of risk.
Results, duration, volume, and the right position depend on existing structure, muscle movement, product properties, technique, and individual response. The term "1 cc" is therefore not a unit that predicts the same result in every area.
The information in this article is provided for general education only and is not a diagnosis or individual recommendation. A doctor must examine the face, health history, previous products, and the risks of each position before planning treatment.
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How is filler different from a biostimulator?
HA filler gives a fairly immediate effect on shape and volume, though swelling may mean you need to wait to assess the real result. A biostimulator uses the tissue's response to stimulate collagen production, and the effect usually becomes clear gradually and may need a course of treatments. The key difference is the goal and the timing of results, not a competition over which group is "better."
| Aspect | HA filler | Biostimulator |
|---|---|---|
| Main goal | Add volume, support, and adjust shape | Stimulate collagen and skin firmness |
| Timing of results | Shape is seen quickly, but you should wait for swelling to subside | Gradual, following tissue formation |
| Reversal | HA may be dissolved with hyaluronidase when indicated | Most have no specific dissolving agent |
| Suited for | Deep folds, hollow temples, chin, lips, or support points | Thin skin, reduced firmness, or gradual skin-quality restoration |
Why does the face look sunken, grooved, or out of proportion?
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Changes in the face do not come from a single layer of skin. As we age, certain bones remodel, supporting ligaments weaken, individual fat compartments shrink or shift, muscles pull the face in different directions, and skin loses elasticity. Problems that look the same on the surface may therefore come from different layers — for example, a visible nasolabial fold may come from a sunken cheekbone, shifted cheek tissue, facial expression, or a shallow skin fold together.
Filling only the spot where a fold is visible may make the face look heavy without addressing the cause. A doctor should therefore assess from the front, oblique, and side views, at rest and while making expressions, as well as looking at the face's original symmetry, bite, bone structure, and previous procedures.
| Layer or component | What is seen on the face | Approach that may be considered |
|---|---|---|
| Bone | Deep folds, clear shadows, receding chin | Structural filler or surgery depending on the level of the problem |
| Fat compartments | Sunken cheeks, nasolabial folds, under-eye bags, jowls | Filling, fat reduction, or surgery depending on the cause |
| Supporting ligaments | Discontinuous jawline, tissue bunching | Support points, tightening devices, or a combined plan |
| Muscle | Wrinkles when moving, large jaw, drooping mouth corners | Botulinum toxin when there is an indication |
| Skin | Thin skin, fine lines, uneven texture | Skin-focused biostimulator, laser, or energy device |
What does filler in each area treat?
แผนที่บริเวณฉีดฟิลเลอร์ ขมับ แก้ม ปาก คาง กรอบหน้า
| Area | Problem seen | Points to consider |
|---|---|---|
| Temple filler | Hollow temples, shadow beside the forehead | An important vascular area requiring high skill |
| Forehead filler | Flat forehead, indentation | High vascular risk; not everyone should have this |
| Under-eye filler | Tear trough, deep shadow from hollowing | Under-eye bags, thin skin, or easy swelling may not suit direct filling |
| Cheek and cheekbone filler | Sunken cheeks, reduced mid-face volume | Overfilling makes the face look heavy or puffy |
| Nose filler | Discontinuous bridge or certain thin-tip shapes | A very high-risk position that does not replace surgery in every case |
| Nasolabial fold filler | Folds from hollowing and tissue folding | Overfilling directly into the fold can make the mid-face heavy |
| Lip filler | Undefined border, low volume | Early swelling can occur and must be distinguished from an abnormal reaction |
| Mouth corner and marionette line filler | Drooping corners or folds from movement | Should not be filled to the point of restricting movement |
| Chin filler | Short, receding chin, or imbalanced proportion | Must consider bite, chin muscle, and bone structure |
| Jawline filler | Discontinuous jawline | If the main cause is fat or laxity, a tightening device may be more appropriate |
| Earlobe and back-of-hand filler | Thin, wrinkled earlobes, visible tendons on the back of the hand | Must check the product's indication and site-specific anatomy |
Areas requiring extra caution: nose, forehead, glabella, temples, and around the eyes, because blood vessels there may connect to the ocular vascular system. Naming certain positions as high-risk does not mean other positions are safe. Ask the injector about their anatomical knowledge, how they watch for vascular occlusion, and the emergency referral process.
Comparing filler with every major biostimulator group
The term "biostimulator" covers many substances with different mechanisms, properties, and indications. This table is organised by substance group and does not confirm that every brand has the same registration or indication in Thailand.
| Group | Example substance or brand | Goal | Suited for |
|---|---|---|---|
| HA filler | Cross-linked hyaluronic acid | Fill, support, adjust shape | Deep folds, chin, mouth, cheeks, temples |
| CaHA | Calcium hydroxylapatite, e.g. Radiesse | Support combined with collagen stimulation | Facial contour and some skin-quality approaches |
| PLLA | Poly L-lactic acid, e.g. Sculptra | Stimulate collagen and restore volume gradually | Overall volume and firmness in suitable candidates |
| PDLLA | Poly D,L-lactic acid, e.g. Juvelook or Lenisna | Stimulates collagen; formula and particle size differ | Skin quality or volume depending on formula and indication |
| PCL | Polycaprolactone, e.g. Ellansé | Provides volume and stimulates collagen | Structure and volume in suitable candidates |
| HA + CaHA hybrid | Hybrid injectable, e.g. HarmonyCa | Support from HA combined with stimulation from CaHA | Jawline contour and firmness per indication |
| HA bioremodeling | High-concentration HA not focused on shaping, e.g. Profhilo | Spreads to improve hydration and skin quality | Dry skin, reduced elasticity in suitable cases |
| PN or PDRN | Polynucleotide, e.g. Nucleofill or Plinest | Focuses on tissue restoration and skin quality | Thin skin or fine areas depending on the product |
| PMMA | Polymethylmethacrylate, e.g. Bellafill | Permanent scaffold combined with collagen | Limited indications; must be screened and used by a specialist |
How to choose treatment for your problem
| Main concern | Option usually considered | Reason |
|---|---|---|
| A specific deep fold or shadow | HA filler | Volume or a support point that defines shape is needed |
| Hollow temples or sunken cheeks | HA filler or certain stimulating substances | HA shows volume quickly; stimulants suit gradual firmness |
| Thin skin, reduced skin quality but no desire to change face shape | Biostimulator or skin bioremodeling | Focuses on skin quality, not shaping the structure |
| Muscle causing a large jaw or wrinkles when moving | Botulinum toxin | Addresses muscle function, not a lack of volume |
| Skin laxity as the main issue | Tightening device or combined plan | Filler is not a tightening device, and overfilling can look heavy |
| Fat accumulation under the chin | Fat reduction or a doctor-assessed method | Filling the jawline does not remove fat |
| Very disproportionate bone structure | Consult a surgeon | Filler has limits and does not replace surgery in every case |
Combination treatment plans
A combined plan should be sequenced by cause. For example, someone with an unclear jawline from a mix of laxity, reduced support, and a prominent jaw muscle may need a tightening device, filler, and botulinum toxin assessed separately. Doing everything at once is not always necessary. The doctor should clearly set the goal, dose, sequence, and follow-up period.
| Combined plan | Suited when |
|---|---|
| Filler and botulinum toxin | Both volume loss and muscle force are present |
| Filler and ultrasound or RF | Both structural sinking and laxity are present |
| Filler and laser | Both volume and skin issues are present (usually needs separate sessions to reduce infection risk) |
| Filler and biostimulator | Both shape and skin quality are needed |
| Filler and surgery | Fine-tuning details before or after surgery in some cases |
A "full face" treatment plan does not mean injecting the whole face — it means looking at how every part relates before choosing where to actually treat. A doctor may find that supporting just two or three positions improves the overall look, without needing to fill every fold.
Safety you should know
Effects seen after injection include swelling, redness, pain, tenderness, bruising, or temporary uneven texture. Complications that are uncommon but severe include infection, inflammatory nodules, immune reactions, vascular occlusion, tissue necrosis, visual disturbance, and stroke. Unintentional intravascular injection is a significant risk even though it happens rarely.
Danger signs after injection:
- Severe pain or unusually increasing pain
- Skin that turns pale, white, dusky purple, or shows a net-like pattern
- Blurred or reduced vision, double vision, or eye pain
- Drooping eyelid, muscle weakness, slurred speech, or other neurological symptoms
- Severe hot redness and swelling, fever, pus, or a severe allergic reaction
If you have any of the above symptoms, contact the clinic and seek emergency assessment immediately. Eye or neurological symptoms should never be watched and waited out.
Preparation and aftercare
| Period | Advice |
|---|---|
| Before treatment | Disclose all medications and supplements; do not stop a prescribed medication yourself; postpone if there is infection or skin inflammation |
| First 24 hours | Do not press, massage, or shape the area yourself; avoid strenuous exercise, extreme heat, and alcohol |
| During swelling | Apply gentle cold compresses as advised; do not judge the result from day-one photos |
| Follow-up | Attend the follow-up appointment to assess once swelling has gone down, and contact immediately if there are danger signs |
Checklist before deciding
- Choose a licensed medical facility and a doctor experienced in facial anatomy
- Check the product name, label, registration number, source, and actual indication
- Disclose your allergy history, underlying conditions, pregnancy or breastfeeding status, current medications, and all previous procedures
- Ask about the plan for vascular occlusion and how to reach the clinic in an emergency after treatment
- Avoid needle-free pressure-injection devices and buying substances to inject yourself
- Understand that review photos are individual results and do not guarantee the same outcome
Frequently asked questions about filler
How long does filler last?
Duration varies by product, position, volume, movement, and each person's metabolism. The same duration should not be guaranteed for every case.
Is 1 cc of filler enough?
One cc is a volume, not the answer to every problem. Some spots need only a small amount, while restoring proportion across several areas may need more planning. A doctor should assess first.
Can filler be dissolved?
HA filler may be dissolved with hyaluronidase when a doctor sees an indication for it, but many collagen-stimulating substances do not have the same kind of specific dissolving agent.
Should the under-eye area have filler or PN?
If the main issue is a deep hollow-related trough, filler may be more appropriate. If the focus is thin skin or skin quality, PN may be an option. Some people are not suited to direct under-eye filling, so under-eye bags, swelling, and structure must be assessed separately first.
Should the nasolabial fold be filled directly?
Not always. The nasolabial fold may come from reduced mid-face support, shifted fat, or laxity. A doctor may support the cheek first and fill directly into the fold only where necessary.
How is filler different from Sculptra and Radiesse?
HA filler focuses on shape and volume that is seen fairly quickly. Sculptra is PLLA, which emphasises stimulating collagen with a gradual effect. Radiesse is CaHA, providing support and stimulating collagen but without a specific dissolving agent like HA. The choice depends on the goal and the risk of the position.
Can filler replace Botox?
They do not perform the same function. Filler adds volume and support, while botulinum toxin reduces muscle activity. Some cases use both together when both causes are present.
Can filler cause a lump?
This can happen from swelling, product placement, injection layer, volume, inflammation, or previous product. If there is a lump, pain, redness, or unusual swelling, a doctor should examine it — do not massage it yourself.
Who should postpone or avoid injection?
People with infection or skin inflammation at the injection site, a history of allergy to the components, or a health condition the doctor assesses as risky should postpone or avoid it. Pregnant or breastfeeding people, or those on certain medications, must inform the doctor.
How do I choose a filler clinic?
Check the facility's licence, the doctor, the product and its source, ask about the emergency response plan, and choose a clinic that assesses the whole face, explains its limitations, and schedules follow-up.
How do I check if filler is genuine?
You should see the box, label, lot number, expiry date, and registration information before treatment. The clinic should open the box in front of you and keep product records according to its own system.
Can filler migrate or shift?
Movement or displacement can occur due to the product, layer, volume, movement force, and repeat injection, so previous products must be assessed before adding more.
Does filler cause the face to sag in the future?
There is no fixed answer. Overfilling or repeat filling without assessment can make the face look heavy, but laxity still comes from age, bone, fat, ligaments, and skin. Fitting the plan properly matters more than a blanket assumption.
Do I need to top up every year?
There is no need to fill on a fixed calendar. You should top up when a doctor assesses that volume or proportion has changed and there is still an indication. Topping up too soon risks over-accumulation.
Can I have an MRI or X-ray after filler injection?
Generally, HA filler is not a contraindication for MRI, but you should inform medical staff and state the position or type of material, especially if it is a different material or the type is unknown.
Summary
Filler is a tool suited to filling, supporting, and adjusting specific proportions, but it is not the single answer to every facial problem. Choosing the right filler texture, position, injection layer, and volume matters more than choosing a brand name or a cc count alone. Some problems may be better matched to a biostimulator, botulinum toxin, a tightening device, or a combination of several methods.
Consult a doctor at Orianna Clinic to assess which areas of your face suit filler before planning an individual treatment.
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