Quick answer: 8 checks before filler
- A licensed doctor assesses your face, not only a sales consultant
- The clinic names the exact filler brand and product line
- The filler is hyaluronic acid (HA) if you want the option to dissolve it later
- The sealed box is opened in front of you
- The lot number and expiry date match the box and syringe
- The injection area, amount and expected result are explained clearly
- The clinic can explain vascular-occlusion warning signs and emergency steps
- You receive aftercare instructions and a contact path if symptoms appear
If a clinic treats these checks as annoying, that is useful information. The safest filler clinics are usually calm and specific, not vague and rushed.
Who filler is usually right for
Dermal fillers are most often used to restore volume, soften folds, refine lips, support the chin, improve under-eye hollowness or balance facial proportions. HA filler is popular because the result is immediate and, in many cases, can be adjusted or dissolved by a doctor if needed.
Filler may be the wrong answer if your main issue is muscle movement wrinkles, skin laxity, active acne, severe pigmentation or deep acne scars. Those problems may need Botox, energy devices, medication, subcision or a combination plan instead. A careful doctor should be willing to say "not filler" when filler is not the right tool.
What to tell the doctor before injection
Before filler, tell the doctor or clinic team about anything that changes your risk profile. This includes:
- Pregnancy, breastfeeding, medical conditions, immune conditions or poor wound healing
- Severe allergies, previous anaphylaxis, lidocaine allergy or known filler reactions
- Bleeding disorders, easy bruising, or medicines and supplements that may affect bleeding
- Active skin infection, inflamed acne, cold sores, rash or dental infection near the treatment area
- Recent dental work, vaccine, illness, facial procedure or previous filler in the same area
- A history of vascular occlusion, nodules, granulomas, keloids or unusual swelling after injections
Do not stop prescribed medication by yourself because a blog says so. Tell the doctor what you use and ask what is safe for your situation.
Questions to ask the clinic
- Which exact brand and product line will be injected?
- Is it HA filler, and can it be dissolved if there is a problem?
- Who is the injecting doctor, and can I verify their medical license?
- How many cc are recommended, and why that amount?
- Will the box be opened in front of me?
- Can I take the box or sticker information home?
- Do you keep hyaluronidase available for HA filler complications?
- What symptoms after injection mean I should contact you urgently?
A trustworthy clinic should answer these without making you feel difficult. You are not asking for luxury; you are asking for basic medical transparency.
How to check genuine filler before injection
Ask to see the sealed box before injection. Check that the box is intact, the Thai label or registration information is present where applicable, and the lot number and expiry date are readable. The syringe or in-box sticker should match the box details. If the clinic says the syringe is already prepared, ask how they can prove the product and lot.
Be especially cautious with split-vial or shared-syringe offers. A genuine full syringe opened in front of you is much easier to trace than a half-price amount drawn from somewhere else. For a fuller checklist, read our guide to spotting genuine filler in Thailand.
Red flags before filler
- The price is far below normal but the brand is vague
- The clinic refuses to show the box, lot number or expiry date
- The injection is offered at a home, hotel room, salon or non-clinic setting
- A non-doctor is presented as the injector for facial filler
- The plan is "more cc is better" without facial assessment
- The clinic promises filler is risk-free
- No one can explain what happens if pain, skin whitening or vision symptoms occur
The bottom line
Before filler, do not only compare price per cc. Confirm the doctor, the exact product, the box-opening process, the reason for the amount, and the emergency plan. Filler is safest when it is treated as a medical procedure, not a quick beauty purchase.