Rejuran vs. Rejuran HB — Same Salmon DNA, But How Do They Actually Differ for Hydration and Elasticity?
Rejuran HB adds hyaluronic acid to classic Rejuran — the regenerative core stays the same, but hydration and plumpness get a meaningful boost.
When researching Rejuran, many people come across the name "Rejuran HB" and aren't sure whether it's an entirely different procedure or simply a variation of the same product. In our consultation room, one of the first questions we hear is almost always: "What's actually the difference between regular Rejuran and HB?"
The short answer is that both belong to the same family — they share the same salmon-derived active ingredient. Both use polynucleotides as their core component to support the skin's natural recovery, while HB takes it a step further by adding hyaluronic acid to bring simultaneous hydration and a plumping effect. So rather than one being "definitively better" than the other, the choice really comes down to what your skin needs most right now — improved texture and elasticity, or relief from dryness and a deflated appearance.
> This post is an informational content piece from Beautystone Clinic in Hongdae.
By the end of this post, you'll know:
· Whether Rejuran and Rejuran HB are the same product or two different ones
· How the two procedures differ in terms of hydration, elasticity, and volumizing effect
· Which skin concerns each one is better suited for
· What to check before booking your procedureWhy People Find Themselves Choosing Between Rejuran and HB
Rejuran is an ECM Skin booster that delivers polynucleotides* — extracted and purified from salmon — into the skin to stimulate its own natural recovery. When "HB" started appearing alongside the original name, confusion spread about whether it was the same thing, an upgrade, or something else entirely.
Polynucleotides*: A component extracted and purified from salmon DNA. Once introduced into the skin, it stimulates fibroblasts and supports the skin's intrinsic recovery and Skin Texture improvement.
At its core, both products share the same key ingredient. As research on polynucleotide-based ingredients shows that they support cell migration and angiogenesis, accelerating recovery in damaged skin, the mechanism by which this ingredient activates fibroblasts and promotes regeneration operates identically in both formulations. The difference lies in what has been added on top of that foundation.
Same Salmon Ingredient — So What's Actually Different?
The most significant difference is what gets added to the formula. Standard Rejuran focuses primarily on polynucleotides, targeting Skin Texture refinement and Elasticity recovery. Rejuran HB layers in hyaluronic acid* to deliver hydration and a subtle plumping sensation alongside that recovery. Studies on combination formulations of hyaluronic acid and polynucleotides show they can simultaneously address hydration, volume, and skin recovery — and that's exactly the dual-action structure HB is built around.
Hyaluronic acid*: A naturally occurring hydrating component already present in the skin. It draws moisture in, contributing to a supple feel and a mild volumizing effect.
| Category | Rejuran | Rejuran HB |
|---|---|---|
| Key Ingredient | Polynucleotides | Polynucleotides + Hyaluronic Acid |
| Primary Goal | Skin Texture refinement and Elasticity recovery | Recovery + Moisturizing and plumping |
| Perceived Effect | Smoother, more refined skin feel | Noticeably hydrated and subtly plumper feel |
| Best Suited For | Texture and Elasticity concerns | Dryness and volume loss concerns |
| Injection Feel | Relatively lightweight | Thicker viscosity, slightly heavier feel |
| Bruise / Swelling | Varies by individual | Varies by individual |
As the table illustrates, these aren't two entirely separate procedures — think of them as the same regenerative foundation, with the option to add or omit enhanced hydration. The recovery pathway (supporting the skin's own regeneration) is identical; what differs is how much immediate Moisturizing and plumpness you experience along the way.
Hydration, Elasticity, and Volume — Where Do They Actually Diverge?
Because polynucleotides work by gradually stimulating recovery from within, results from both products don't arrive all at once — they build over several weeks. Rather than a dramatic change right after the first session, you'll notice Skin Texture and Elasticity improving progressively with each visit.
Where a real difference becomes apparent is in the days immediately following the procedure. With HB, the added hyaluronic acid means a noticeably hydrated and subtly plumped sensation can be felt relatively quickly after treatment. Standard Rejuran, by contrast, doesn't deliver that immediate volumizing sensation — it works more quietly, refining texture over successive sessions, so the early results feel more gradual.
Downtime is generally minimal for both. Small bumps at the injection sites, mild redness, and occasional Bruising are common responses that typically resolve within a few days. That said, HB's higher viscosity can make the injection sites feel slightly heavier, so it's worth giving yourself a few days of buffer before any important commitments.
Why Beautystone Clinic in Hongdae?
At Beautystone Clinic in Hongdae, we don't lead with "which product is more premium" — we start by looking at what your skin actually needs most right now. Even though both are rooted in the same salmon-derived ingredient, someone dealing primarily with dryness and volume loss may find HB's added hydration more beneficial, while someone focused on Skin Texture and Elasticity may get more from standard Rejuran. We assess your skin together and decide from there. Being a boutique clinic within walking distance of Hapjeong Station means we can track each person's recovery pace and plan the next session timing accordingly.
Things Worth Checking Before Your Procedure
Even within the same product family, the right choice varies by skin condition — so taking a moment to clarify a few things beforehand can make a real difference.
- Is your main concern Skin Texture and Elasticity, or dryness and volume loss? — Texture and Elasticity points toward standard Rejuran; dryness and deflation points toward HB.
- Your schedule around recovery — Mild Bruising and small bumps can linger for a few days, so leave some buffer before major events.
- Session spacing — Typically spaced 2–4 weeks apart over multiple sessions to build cumulative results.
- Whether you're combining with other procedures — The sequence with Laser or Lifting procedures should be discussed and confirmed with your provider.
- Your skin's sensitivity level — Temporary irritation post-injection is possible, so keep your Moisturizing routine simple before and after the procedure.
This post is intended as general information only. Your suitability for this procedure and the right product choice should always be determined in direct consultation with a qualified medical professional.
Frequently Asked Questions
Q. Is Rejuran HB simply better than standard Rejuran?
A. It's not a matter of one being categorically better — HB takes the same regenerative foundation and adds hyaluronic acid to also address hydration and plumpness. If Skin Texture and Elasticity are your primary concerns, standard Rejuran may be the stronger fit. If dryness and a deflated appearance are your main issues, HB may serve you better. The best way to decide is to have your skin assessed during a consultation.
Q. When will I start noticing results?
A. Because polynucleotides work by supporting the skin's own recovery, meaningful changes tend to emerge gradually over several weeks. With HB, the hyaluronic acid component means a noticeably hydrated sensation can be felt relatively soon after the procedure. Improvements in Skin Texture and Elasticity typically begin to become apparent around the four-week mark as sessions accumulate.
Q. How many sessions are typically recommended?
A. A common starting point is around three sessions spaced 2–4 weeks apart. Rather than expecting a single session to do everything, this is a procedure that builds results progressively — so the ideal number of sessions is best determined by your provider based on your skin's response and condition.
Q. I have some Bruising after my procedure — is that normal?
A. Light Bruising and small bumps at the injection sites are common reactions and usually resolve within a few days. Because HB has a higher viscosity, the injection sites may feel slightly heavier than with standard Rejuran. However, if symptoms worsen over time or are accompanied by increasing Heat sensation or Pain, please contact the clinic that performed your procedure.
