Rejuran or Rejuran HB: How Do You Choose?

One of the most common questions we hear from patients researching polynucleotide skin boosters is whether Rejuran and Rejuran HB are actually two different treatments — or just two names for the same shot. The short answer? They share the same core ingredient, and the difference comes down to one addition that changes how your skin feels right after treatment. In this article, we'll cover what's actually inside each formula, how to decide which one fits your skin concern, what the injection itself feels like, and what's normal versus not during recovery.

What Is Rejuran?

Rejuran is a skin booster built around polynucleotides (PN) — purified DNA fragments, often derived from salmon, that are injected into the dermis to support your skin's own repair process. Rather than adding volume the way a dermal filler does, PN works by encouraging cell activity and collagen production, so changes tend to show up gradually rather than all at once.

Research on polynucleotide-based treatments has linked PN to faster cell migration and new blood vessel formation in damaged tissue, which is part of why it's used to support skin repair. That process takes time, though — most people don't notice a dramatic shift on the day of treatment. The real payoff tends to show up gradually, as texture and tone settle down over the following weeks.

The One Ingredient That Sets Rejuran HB Apart

Here's where the two formulas split: Rejuran HB adds hyaluronic acid (HA) to the same PN base. Original Rejuran stays PN-only, so it's built around repair and texture. Rejuran HB combines PN with HA, which means you get the same repair mechanism plus a hydration boost and a bit of immediate plumpness that original Rejuran doesn't have.

A study on combined hyaluronic acid and polynucleotide formulations found that pairing the two ingredients can support hydration and mild volume alongside tissue repair — essentially letting each ingredient do a different job at the same time. That combination is the whole reason Rejuran HB exists as a separate product rather than just a stronger dose of the original.

Category	Original Rejuran	Rejuran HB
Core ingredient	Polynucleotides (PN)	PN + hyaluronic acid (HA)
Main focus	Texture and firmness	Repair plus hydration and fullness
Consistency	Lighter	Thicker, more viscous
Right-after feel	Subtle	Plumper, more hydrated
Best-suited concern	Rough texture, low firmness	Dryness, sunken-looking skin

Neither version is the "upgraded" one — they're built for different jobs. Original Rejuran keeps things simple and repair-focused, while Rejuran HB layers hydration and fullness on top for skin that needs both at once.

Texture and Firmness, or Hydration and Fullness?

Instead of starting with the product name, it helps to start with what's actually bothering you. If rough texture, enlarged pores, or lost firmness are your main concerns, original Rejuran is usually the better starting point. If dryness, fine lines, or a general sunken feeling paired with a craving for a more hydrated look are what you're dealing with, Rejuran HB tends to fit better.

Skin thickness and healing speed vary a lot from person to person, so it's common to start conservatively and let your provider adjust the plan based on how your skin responds after the first session. Some providers even combine the two — using HB in drier areas and original Rejuran where texture is the bigger issue — rather than committing to one product across your whole face.

What Does the Injection Actually Feel Like?

The formulas feel different going in, too. Original Rejuran has a lighter consistency, so most people describe the injection itself as fairly comfortable. Rejuran HB is thicker because of the added HA, which can make the injected area feel a bit heavier or more noticeable right after treatment.

That thicker texture is also part of why HB tends to show a faster plumping effect — the HA pulls in water almost right away, while original Rejuran's results build more quietly over the following weeks as texture and firmness settle in. If you have an event coming up, it's worth scheduling either treatment with a few days of buffer, since some visible fullness, redness, or light bruising is normal at first.

Before You Book: What to Check First

Since both versions share the same core mechanism, a short checklist can make the decision easier before your consultation.

• Your main concern: Texture and firmness point toward original Rejuran; dryness and fine lines point toward HB.
• Your schedule: Mild swelling or bruising is common for a few days, so avoid booking either version right before a big event.
• Session spacing: Most protocols call for a series spaced two to four weeks apart rather than a single visit.
• Other treatments: If you're combining this with a laser or lifting procedure, ask your provider how to sequence them.
• Skin sensitivity: Keep your routine simple before and after treatment, and skip harsh actives for a few days.

Cost varies by clinic, product, and how many sessions you need, so it's worth asking your provider for a plan built around your skin rather than assuming a flat price applies to everyone. If you're curious about current offers, that's something worth asking about at /en/promotion.

Side Effects & Downtime

Most reactions after a Rejuran or Rejuran HB session are mild and short-lived.

• Redness and mild swelling at the injection site: Usually settles within one to three days.
• Small bumps you can feel under the skin: That's the product before it fully disperses, and it typically smooths out within a few days.
• Light bruising: Usually fades within a week and is easy to cover with concealer.
• Mild tightness or stinging: Keeping the area moisturized usually helps this settle within a day or two.

That said, a few signs mean it's time to check in with your provider rather than wait it out.

• Pain or swelling that keeps getting worse rather than improving.
• High fever, spreading redness, or noticeable heat at the injection site — this can point to infection, so seek medical care right away.
• A firm lump that hasn't gone down after two weeks.
• Hives or itchiness that keeps spreading, which could signal an allergic reaction.

Individual results vary, and how your skin responds depends on factors your provider will walk you through, including your skin type, how many sessions you commit to, and how closely you follow aftercare. This article is meant as general information, not a substitute for a conversation with the provider who's actually looking at your skin.

The Bottom Line

• Original Rejuran and Rejuran HB share the same polynucleotide core, but HB adds hyaluronic acid for hydration and mild, immediate plumpness.
• Texture and firmness concerns tend to point toward original Rejuran; dryness and fine lines tend to point toward HB.
• The injection feel differs too — HB is thicker and shows a faster plumping effect, while original Rejuran's results build more gradually.
• Most side effects are mild and short-lived, but watch for red flags like worsening pain, fever, or spreading redness.

Like any procedure, it comes with trade-offs, and neither version is a one-size-fits-all pick. Ultimately, the choice depends on your skin, your goals, and your schedule. If you're weighing Rejuran against Rejuran HB, a consultation is the best way to find out what actually fits you. BeautyStone is a dermatology clinic in Seoul's Hapjeong area — you can ask about current offers at /en/promotion.

Frequently Asked Questions

Q1. What's the actual difference between Rejuran and Rejuran HB?

Both are built around polynucleotides (PN), but Rejuran HB adds hyaluronic acid (HA) to that same PN base. Original Rejuran stays PN-only and focuses on repair and texture, while Rejuran HB layers in HA for extra hydration and a bit of immediate plumpness.

Q2. Which is better for me, Rejuran or Rejuran HB?

It comes down to your main concern: Rejuran suits people mainly chasing texture and firmness over time, while Rejuran HB fits better if hydration and a touch of immediate fullness matter too. A consultation can help match the formula to your skin's specific needs.

Q3. Does the Rejuran injection hurt?

Most patients describe a series of small pinpricks with some pressure rather than sharp pain, and numbing cream is commonly used beforehand. Sensitivity varies by individual and by treatment area, so it's worth asking your provider what to expect for your specific plan.

Q4. What's normal versus not normal during Rejuran recovery?

Mild redness, small bumps, or slight swelling for a day or two is typical and usually settles on its own. Results build gradually over the following weeks rather than showing up immediately, so don't judge the outcome too early — but do contact your provider if swelling or firmness worsens instead of improving.