Is My Filler or Booster Genuine? How to Check and Ask at a Seoul Clinic

2026.09.02

You've probably had this thought before a filler or booster appointment. "This product going into my face, is it actually genuine?" You booked expecting a well-known brand, but once you're lying on the table it's over before you get a chance to see what's going in.

I get this question a lot lately. Many patients want to know first: how can I trust that it's genuine, and that the dose is right? That's fair. It's your money and your body, so of course you want to see for yourself.

Here's something that doesn't get said enough. You can ask, right there in the treatment room, to confirm that the product is genuine, that the seal is opened in front of you, and that the full dose is used. Asking isn't rude at all. So today I'll walk through exactly what to ask and check, before and during your procedure.

The short version

• In the consultation or prep stage, just ask first: "how do you confirm this product is genuine?"
• Each maker verifies authenticity in its own way - Rejuran uses box marking/QR/NFC, Juvelook an authenticity card, Sculptra an online code lookup.
• Ask them to open the sealed package in front of you, and look at the expiry date and cold-storage condition with your own eyes.
• Dose is easy to check too: the markings on a filler syringe, or the number of booster vials/ampoules.
• These requests are a patient's fair right. Ask, and most clinics will happily walk through it with you.
• Checking genuineness and dose is the baseline of knowing what you're getting. Results themselves still vary from person to person.

How do you check that a filler or booster is genuine at the clinic?

You ask during the pre-treatment consultation or prep. The genuine-product marking, opening the seal, expiry and storage, and dose - these four you can check with your eyes, no special equipment needed.

A lot of people assume this is something only the clinic can know. In reality, many aesthetic injectables now come with manufacturer verification you can do yourself: a mark printed on the box, a QR code you scan, an authenticity card the clinic hands you. So checking is already possible. All that's left is to ask.

The best time to ask is before you lie down. If you ask at the consultation, "how can I confirm this product is genuine?", it gets folded naturally into the prep. Let's go through the four in order.

How do I ask to verify Rejuran, Juvelook, or Sculptra?

Each maker verifies authenticity in its own way, so ask the clinic for the method that fits your product and check it together. It's done through a mark printed on the box, a QR scan, or an authenticity card or code lookup.

Boosters get used so often that the verification systems around them have become quite thorough. Let's look at the three specifically.

Rejuran - Verifying genuine Rejuran takes three steps. It's the method PharmaResearch recently built into the packaging: check for the "DOT" marking on the box, scan the QR code on the back to confirm authenticity and read the insert, then hold your phone to the back of the individual blister to confirm once more via the NFC tag. Just say "could I see the box?" and you can watch this happen right there.

Juvelook - Juvelook is verified with a card. The maker, VAIM, provides an authenticity card; scan its QR code or enter the code on the official site, and the authenticity comes up. You can ask, "could I get the card and look it up?"

Sculptra - Galderma Korea's official site has an authenticity menu, so entering the code confirms it. That said, whether a card is provided and how it's checked varies by clinic and by period, so it's best to ask at the consultation how it can be confirmed.

Good to know - Verification differs by brand, and when the packaging changes the marking changes too. So rather than judging by a single fixed rule, like "no QR means fake," it's more accurate to ask first: "how is this product verified as genuine?"

What should I ask about opening, expiry, and cold storage?

Just as important as the genuine mark is the condition. Even a real product means little if it was already opened, past its date, or stored wrong. Ask to see these four in the room.

• Opened in front of you - Just say, "please open the sealed product in front of me." With a product opened ahead of time there's no way to know when, so this is the baseline.
• Expiry date - "Could I see the expiry date on the box?" Check together whether it's passed or close.
• Lot number - It's the tracking number on each product. In case an issue ever comes up, it's fine to ask, "could you note the lot number for me?"
• Cold storage - Some products, like botulinum toxin, need refrigeration. Say "could you take it straight from the fridge?" and you can see the storage condition for yourself.

Aesthetic drugs and devices imported through proper channels go through MFDS approval and customs. After that, how they're stored and opened inside the clinic is the last gate - and that's the part you can watch with your own eyes.

How do I check the dose?

A filler syringe has markings, so you can see how much goes in, and for boosters you can confirm the dose by the number of vials or ampoules.

Dose comes up almost as often as genuineness - the feeling of "am I getting the full amount I paid for?" This can be checked too, if you ask.

Filler - Most come in a marked prefilled syringe. Say "please open a new syringe," and watch whether it's opened from a sealed state, how full it is, and how much is left after - all on the markings.

Booster - Products like Rejuran or Juvelook come by the vial or ampoule. Ask "how many vials will my treatment use, and are you opening new ones?" and you can confirm by the count.

It's easy to assume that with a stronger procedure the dose decides the result. In practice, where it's placed and at what depth often decides the outcome more than the amount does. So checking the dose is closer to a safeguard - seeing with your eyes that what you paid for was fully used.

Is it okay to ask them to verify it's genuine?

Yes. Checking the product going into your body is a patient's fair right.

A surprising number of people hold back, worried the clinic might take offense. But at a place that uses genuine product, going through the check together is natural for both sides. The check itself builds trust. So these three lines are perfectly fine to bring up.

• "How do you verify this product is genuine?"
• "Can you open the seal in front of me?"
• "Could we look at the expiry and the remaining dose together?"

When a clinic is comfortable doing this with you, that's exactly when you can relax and leave it in their hands. Here at Forever, our clinic in Myeongdong, Seoul, we keep the genuine stock in the cabinet as is, open packages in front of you, and confirm authenticity together when you ask, as a matter of course, because it's the way that puts everyone at ease.

Frequently asked questions

Is it okay to ask them to verify it's genuine?

Yes. Checking the product going into your body is a patient's fair right, not a rude demand. Asking for the seal to be opened in front of you, or to see the authenticity check together, is a natural request at any clinic.

Do several people ever share one filler?

Filler mostly comes as a single-use prefilled syringe, and you can confirm on the markings whether a sealed new one is being opened. Asking "please open a new syringe" and watching the moment it's opened is the sure way.

Is it a problem to use an already-opened product?

On two counts - sterility and dose - it isn't recommended. There's no way to confirm when it was opened or how it was stored since. So we treat opening from a sealed state, in front of you, as the baseline. If something looks prepared in advance, it's fine to say "please open a new one."

Can patients verify Rejuran or Juvelook themselves?

Yes. Rejuran through the QR code on the box and the NFC tag on the blister; Juvelook through the QR code on the authenticity card or a code lookup. Ask to see the box or card, and confirm right there on your phone.

Why do results differ from person to person even with genuine product?

Because genuine product and correct dose are the minimum requirement for confirming what you receive, not a factor that guarantees the result on its own. With the same product, results and how long they last vary widely by skin condition, the area and depth of injection, and recovery response. So separate from the genuine check, whether the procedure suits you is its own question.

In short

If "is it genuine, is the dose right?" is nagging at you before a filler or booster, those are things you can check by asking, right there in the room. Ask at the consultation, "how do you confirm this product is genuine?", then during prep look together at the maker's verification (Rejuran QR/NFC, Juvelook card, Sculptra code), the seal opened in front of you, the expiry and cold storage, and the dose on the syringe markings. Those four let you clear away most of the worry with your own eyes.

And asking for that check is not rude. Ask, and most will walk through it with you naturally. At Forever we keep that check open at all times. Next time you have a procedure coming up, try leading with one line: "how do you confirm this product is genuine, and could you open it in front of me?" That one sentence is a simple, effective way to protect what goes into your face.

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