How Much Does Rejuran Hurt? Healer vs HB and When to Skip It

Worried the Rejuran pain level will be too much for thin, reactive skin, especially after a booster at home left you gripping the chair?

Rejuran stings: a quick, sharp prick at each injection point, then a short burn as the thick gel goes in. The sharp part ends with the last injection. After that you usually have tender, raised bumps that fade within a few days. Rejuran HB has lidocaine in the syringe and tends to feel milder than Healer, which has none.

Hello, I'm Dr. Hongseok Kim, a board-certified dermatologist with 21 years of experience and the Medical Director of VOS Dermatology Clinic in Gangnam. I perform every procedure here myself, from the consultation to the last needle point, so the person you tell about that painful session is the same person holding the syringe.

If the needle itself is what scares you, VOS offers nitrous-oxide conscious sedation, which we've used in more than 5,700 cases. A medical interpreter for your language is provided at no extra charge, so you can say stop, or tell me which point hurt, in whichever words come first.

If a booster elsewhere put you off, send a daylight photo of your cheeks on WhatsApp with the name of the product you had, and ask whether HB or Healer makes more sense for your skin. The consult on WhatsApp is free, and one photo is enough to start.

What does Rejuran actually feel like?

Rejuran is a polynucleotide gel, a purified DNA fraction from salmon, and it is noticeably thicker than the hyaluronic acid most people picture when they hear the words skin booster. It goes in as many small, shallow deposits spread across the area. A full cheek is a long series of separate pricks, one after another.

Each point has two parts. First the needle, which is quick. Then the pressure as the gel is pushed into the upper dermis, which feels like a short burn or a bee sting that fades out. That second part is the one people remember, and it's why Rejuran has a reputation for hurting more than thinner boosters. That reputation holds for Healer and for the under-eye version. It's less true for HB.

Risks and side effects to know

Once the injections stop, the sharp sensation stops with them. What stays is a dull tenderness, like skin that has been pinched, plus small raised bumps where each deposit sits. Those bumps are the gel itself sitting in the skin, and they usually flatten within a few days as it spreads. Pinpoint bruises are possible, more so on thin skin.

Healer vs HB: why the sting differs

The biggest single lever on your Rejuran pain level is the version that goes in the syringe. VOS has three on the menu. Rejuran Healer is polynucleotide only and is the one meant for sensitive skin, redness and a weakened skin barrier. Rejuran HB combines polynucleotide with hyaluronic acid and lidocaine, a local anesthetic, for hydration and a more comfortable session. Rejuran Eye is polynucleotide only, formulated for fine lines and thin skin under the eyes.

That sets up an awkward trade-off for skin that flushes and reacts. The version made for your skin type on paper is the one with no anesthetic in it. Healer can't do that, so the last cheek feels much the way the first one did.

My view is that you pick the product for what your skin needs, then manage the pain separately with numbing time, the order of areas, and sedation if you want it. Choosing HB because it hurts less makes sense when hydration is your goal anyway. It makes less sense when what you're treating is redness and a fragile barrier.

How each type is used and how sessions are spaced is covered in my guide to Rejuran types and sessions in Seoul. The under-eye version, which sits in the most sensitive skin on the face, has its own page on Rejuran for fine lines around the eyes.

Which parts of the face hurt most?

Where the needle goes matters almost as much as what's in it. Skin thickness, nerve density and how much padding sits over bone all change the feeling.

If your skin is thin and flushes easily, every row tends to move up a notch. Reactive skin often reads the same needle as more intense, and the redness afterwards is usually more visible and lasts a little longer. How thin skin changes the product choice and the plan is in my piece on Rejuran for thin, sensitive skin.

How I approach a needle-anxious patient with reactive skin

The consultation comes first, and its purpose is to set realistic expectations, including about pain. The question I'd want answered is what exactly hurt last time. A sharp prick, a burn that built up across the face, and soreness the next day each point to a different fix. A building burn often means a thick product with no anesthetic and too little numbing time. Next-day soreness has more to do with the amount and the depth.

I choose the product and the dose for your face rather than a package, and I hold to exact dosing: never more, never less than your skin needs. That matters for pain as well. More product means more injection points and more pressure, and past what your skin needs it doesn't buy a better result.

Say you're 41, your cheeks flush in warm rooms, and you stopped halfway through a booster session at home because the burn kept building. If what frightens you is the needle itself, that's where nitrous-oxide sedation earns its place. You stay awake and breathe on your own; it mainly softens the anxiety and dulls the edge of each prick.

Worth knowing: The pain you remember from one booster session isn't a fixed property of your skin. Product thickness, how long the numbing sat, the number of points, how much you slept and even how much coffee you had that morning all shift it.

When should you skip or postpone Rejuran?

The normal part first. Small raised bumps, redness and tenderness for a few days are expected, and pinpoint bruises can take about a week to fade. Results vary by person, and so does how long the bumps stay visible.

As general medicine, these are reasons to wait or to skip:

• An active acne flare, cold sore, eczema patch or any infection where the injections would go.
• A recent laser treatment, peel or other injectable in the same area.
• Isotretinoin taken within the past several months.
• Pregnancy or breastfeeding.
• An allergy to fish, salmon or polynucleotide products. If you react to lidocaine or similar local anesthetics, HB isn't the version for you.
• Blood thinners or a bleeding disorder, which raise the bruising risk. Never stop a prescribed medicine for a cosmetic treatment; tell me what you take.
• A rosacea flare that is hot and active right now. Letting it settle first is kinder to the skin and less painful.

Whether your skin is ready on the day is something I check in person, because a photo can't show heat or how the skin reacts to touch.

After you fly home, a few signs are outside the normal course: bumps that turn hard, redness that spreads instead of fading, pain or heat that increases after the third day, pus, or fever. See a doctor locally the same day and show them the product name and session date, which are worth saving on your phone before you leave Seoul. You can also send a photo on WhatsApp with that date.

Before you book, put your medicines and supplements in your first WhatsApp message along with your travel dates, and ask whether that list and that timing work for Rejuran. Fish oil counts, and it's the one people forget.

What can you do on the day to make it easier?

Don't put the session on the day you land. After an overnight flight with little sleep, pain tends to feel stronger, and skin that has spent hours in dry cabin air is often more reactive. VOS is closed on Wednesdays and Sundays and open Saturdays from 10:00 to 16:00, so if you land on a Tuesday night, Thursday morning is the natural slot, with a night's sleep behind you.

Eat before you come. Feeling lightheaded during injections is more common on an empty stomach, and it makes everything feel worse. Skip alcohol the night before, and ask your own doctor about pausing fish oil, high-dose vitamin E or aspirin-type painkillers a few days ahead, since all of them can deepen bruising. Acetaminophen (paracetamol) doesn't add to bruising if you'd like something for pain.

Arrive on time. Numbing cream needs time on the skin to work, and a late start tends to shorten it. For the rest of the day, keep makeup off the injection points, so leave the evening free of anything that needs a camera-ready face.

If you only have a few days in Seoul, my notes on fitting one Rejuran session into a short trip cover which day of the trip to put it on.

Before you message us

Send three things on WhatsApp: a daylight photo of your face taken facing a window, the name of your last booster with what hurt (the prick, the burn or the next day), and your dates in Seoul. Then ask the question that's really on your mind: given my skin and that last session, which Rejuran would you choose for me, and does sedation make sense? The consult is free. If you're close to booking, ask there how the deposit and payment work, since both are settled after the consultation.

Skin that flares at a touch tells me more about how the session will feel than any pain scale. Message us on WhatsApp with that photo and your dates.

Results, timing and recovery vary from person to person. This article is general information from VOS Dermatology Clinic and does not replace an in-person consultation. Any prices mentioned are from the clinic’s official price list (KRW, before VAT) and may change.