Product Authenticity: How to Verify product registration marks & lot numbers — VERZO CLINIC Bangkok

    TL;DR: Start with the Thai registration: every drug and medical device legally used in Thailand is registered with the Thai อย. (FDA Thailand), and a clinic should be able to tell you the registered Thai trade name of what it is injecting. Then look at the box itself: an intact seal, a printed lot number, an expiry date, and manufacturer markings that match the brand. VERZO CLINIC opens every product in front of the patient.

    Written by Dr. Waleerat Thaweebanchongsin, licensed physician with over 10 years of aesthetic-medicine experience. VERZO CLINIC near BTS Ekkamai. Free consultations via LINE @verzo.

    Last updated: April 2026

    Frequently Asked Questions

    How do I know a product used on me is genuine?

    Start with the Thai registration: every drug and medical device legally used in Thailand is registered with the Thai อย. (FDA Thailand), and a clinic should be able to tell you the registered Thai trade name of what it is injecting. Then look at the box itself: an intact seal, a printed lot number, an expiry date, and manufacturer markings that match the brand. VERZO CLINIC opens every product in front of the patient.

    What is a lot number and how do I verify it?

    The lot number is printed on each box and vial and identifies the exact production batch. Ask the clinic to show the sealed packaging before treatment, read the lot number and expiry date yourself, and if you want to go further, most manufacturers can confirm a lot number through their website or distributor. A clinic that hesitates to show packaging is telling you something.

    What do the foreign marks on the box mean — KFDA, CE and similar?

    Those are markings from the manufacturer's home market: Korean-made products often print their Korean registration, European-made devices carry a CE mark. On a genuine box they will be present, spelled correctly and printed cleanly, which makes them useful when checking that packaging is real. What makes the product legal to use in Thailand, however, is its Thai อย. registration — that is the approval that matters here.

    What are red flags for counterfeit aesthetic products?

    Unusually low prices, packaging with spelling errors or poor print quality, missing lot numbers or expiry dates, a clinic that refuses to show packaging, products that did not come through the authorized Thai distributor, and vials that appear pre-opened or repackaged.

    How does VERZO CLINIC ensure product authenticity?

    All products are sourced through the authorized Thai distributors, so every unit is registered with the Thai อย. and traceable by lot number and expiry date. Products are opened in front of the patient, and packaging is available for inspection on request.

    Are products registered with the Thai อย. safe?

    Thai อย. registration requires evidence of safety, efficacy and manufacturing quality before a product may be sold or used in Thailand. Every product used at VERZO CLINIC carries Thai อย. registration.

    Can I check whether a clinic uses genuine products?

    Yes. Ask to see the sealed packaging before treatment, read the lot number and expiry date, check that the product name matches what was discussed at consultation, look for the manufacturer's security features such as holographic stickers or QR codes, and ask whether the clinic buys from the authorized Thai distributor.

    Why are some clinics able to offer extremely low prices?

    Extremely low prices can indicate counterfeit product, grey-market imports stored outside the cold chain, dilution, or stock past its expiry date. Genuine products have a floor cost from the authorized distributor, and pricing far below it is a signal worth questioning.

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    Product Authenticity: How to Verify product registration marks & lot numbers

    Protecting yourself from counterfeit aesthetic products

    Dr. Waleerat| April 2026| 8 min read

    Why Authenticity Matters

    Counterfeit and grey-market aesthetic products exist because the genuine ones are expensive and the boxes are easy to imitate at a glance. A fake filler is not just wasted money: its contents, sterility and storage are all unknown. The protection is not brand knowledge — it is a checking habit that takes under a minute, and this article is that habit written down.

    Thai อย. Registration Comes First

    Every drug and medical device legally used in Thailand is registered with the Thai อย. (FDA Thailand) before it may be sold or injected here. That registration — not any foreign certificate — is what makes a product legal to use in this country, and it requires evidence of safety, efficacy and manufacturing quality. A clinic should be able to tell you the registered Thai trade name of what it is using. Every product used at VERZO CLINIC carries Thai อย. registration and arrives through the authorized Thai distributor.

    Marks From the Manufacturer's Market

    A genuine box also carries the markings of the country where it was made: Korean-manufactured products usually print their Korean registration (KFDA/MFDS), European-made devices carry a CE mark, and American products print their local labelling. These marks are useful to you in one specific way — on a real box they are present, spelled correctly and printed cleanly, so a missing or misprinted mark is a fast way to spot a fake. They are information about the manufacturer, not the approval that authorizes use in Thailand; that authorization is the Thai อย. registration in the section above.

    Lot Numbers

    The lot number identifies the exact production batch and is printed on both the box and the vial, next to an expiry date. It is the one identifier a counterfeiter has real trouble faking consistently, because it must match the manufacturer's records. Read it yourself before treatment. If you want certainty, most manufacturers or their Thai distributors can confirm whether a lot number is genuine.

    How to Verify

    The habit, in order: (1) at consultation, confirm the product name and its registered Thai trade name; (2) before injection, ask to see the sealed box — a good clinic offers before you ask; (3) read the lot number and expiry date; (4) check the seal is intact and the print quality is clean; (5) watch the vial being opened. VERZO CLINIC opens every product in front of the patient as standard practice.

    Red Flags

    Walk away, or at least ask hard questions, when you meet: a price far below every other clinic for the same named brand; packaging with spelling errors or blurry print; no lot number or no expiry date; a clinic that will not show the box; vials that arrive already opened; or a product the authorized Thai distributor does not carry.

    VERZO Standard

    Every product at VERZO CLINIC is registered with the Thai อย., purchased through the authorized Thai distributor, traceable by lot number and expiry date, and opened in front of the patient. Packaging is available for inspection on request — asking to see it is normal here, not awkward.

    Frequently Asked Questions

    For more questions, contact us via LINE @verzo

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    Medical Disclaimer

    Results vary depending on individual skin and body conditions.

    Please consult a physician before treatment.

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    VERZO CLINIC — 988-990-992 Sukhumvit Road, Ekkamai, Bangkok 10110, Thailand. Open daily 10:00–19:00 (Bangkok time). Staff can assist in Thai, English, Japanese and Chinese.

    Contact: LINE @verzo · WhatsApp +66 95 326 6644