The genuine-filler checklist — before the needle touches your face
- The box is intact and the seal unbroken — you may ask to hold it
- It carries a Thai-language label and a Thai FDA registration number — legally imported product must have one
- The lot number and expiry date on the box match the syringe inside
- A new box is opened in front of you, always — that is the standard at a good clinic, not a special request
- The brand and product name match what was agreed and what you are paying for
If any one of these fails, you have every right to stop and ask immediately — before the injection, not after.
What is split-vial filler, and why is it dangerous?
Split-vial filler means one syringe divided across several customers, or decanted into other containers to sell more cheaply. The problem: a sterile product is only sterile until it is opened. Splitting risks contamination and infection, the lot number can no longer prove whether the product is real, and the amount you receive often isn't what you paid for. The cheaper price buys the most expensive risk there is.
Fake filler is more dangerous than you think
The fakes in circulation are often not real hyaluronic acid at all. In some cases they are substances that cannot be dissolved with the enzyme. When problems strike — lumps, chronic inflammation, a blocked blood vessel — fixing it is many times harder than with genuine filler, because the doctor doesn't even know what substance they are dealing with. This is why an abnormally cheap price is not a promotion — it's a warning sign.
Check the Thai FDA database yourself
Legally imported medical devices and medicines can be checked by registration number against the Thai FDA's database — use the FDA product-search system (porta.fda.moph.go.th). If you find a suspicious product, report it directly to the FDA hotline 1556.
If you suspect you've already received a fake
Keep all the evidence — the box, photos, receipts, the chat where things were agreed — and see a dermatologist or a doctor experienced with filler immediately for assessment. Don't wait and watch on your own. Then report to the FDA at 1556, and if the clinic's behaviour looks illegal, report to the HSS at 1426 as well. For the detailed clinic-and-doctor check, read our step-by-step license guide.
The bottom line
Genuine filler can always prove itself — a real box, a Thai FDA label, matching lot numbers, opened in front of you. Anything you are asked to accept purely on trust, with no way to verify it, does not belong in your face.