Polynucleotides vs Rejuran for Men: 2026 Bangkok Guide

The short version: "polynucleotides vs Rejuran" is the wrong question

If you have searched "polynucleotides vs Rejuran," you have run into one of the most common myths in regenerative skincare. Rejuran is a polynucleotide. It is a branded injectable made from purified, fragmented salmon DNA, and "polynucleotides" (PN) is simply the category that Rejuran belongs to.

Comparing the two is like comparing "painkillers vs paracetamol," or "SUVs vs the Toyota Fortuner." One is the class; the other is a product inside that class.

So the genuinely useful comparison for a man deciding how to treat acne scars, tired under-eyes, fine lines or rough, sun-damaged skin is:

• Rejuran vs other polynucleotide brands (Plinest, Nucleofill, Croma PN, and others), and

• Which Rejuran variant (Healer, HB, S or I) matches your specific concern.

This guide does both, with male skin in mind, transparent Bangkok pricing, the safety detail you need before booking, and references to the clinical literature. It is educational only. Polynucleotide injectables are prescription-grade medical procedures that require an in-person men's aesthetics consultation and skin assessment before treatment.

One-line takeaway: Don't choose "polynucleotides OR Rejuran." Choose which polynucleotide product (and which variant) fits your skin, your budget and your medical history, then have it placed by a qualified injector.

---

What polynucleotides actually are

Polynucleotides are long chains of nucleotides, the building blocks of DNA, that are purified and fragmented from fish sources (most commonly salmon or trout) and sterilised for injection into the skin's middle layer (the dermis).

They belong to a family of regenerative injectables sometimes grouped under "salmon DNA" treatments. You will see two closely related terms:

• PN (polynucleotides): longer chains, typically with a molecular weight at or above ~1,500 kDa.

• PDRN (polydeoxyribonucleotide): shorter DNA fragments, typically below ~1,500 kDa.

Both are derived from the same kind of fish-DNA raw material, and both are used in aesthetic medicine. The practical difference is that longer PN chains form a denser scaffold for skin cells, while shorter PDRN fragments lean more on a signalling pathway (adenosine A2A receptor activation) that is anti-inflammatory and pro-healing. Rejuran's marketing emphasises a purified polynucleotide/PDRN content; in everyday clinic language, Rejuran is referred to as a polynucleotide ("salmon DNA") product.

How they work (and what they do NOT do)

A common piece of misinformation, repeated in the older version of this very article, is that polynucleotides "repair your skin cells at the molecular level" or "repair damaged DNA." They do not edit or repair your own DNA. That is not the mechanism.

What actually happens is:

1. The injected polynucleotide chains act as a temporary biological scaffold in the dermis.

2. That scaffold, plus the signalling activity of the fragments, stimulates your fibroblasts (the collagen-and-elastin-making cells) to switch into a more active state.

3. Your fibroblasts then produce more of your own collagen and elastin, improve the skin's water-binding capacity, and quiet low-grade inflammation.

4. Over weeks, that translates into firmer, more hydrated, smoother-looking skin. The polynucleotide itself is gradually broken down and absorbed.

In short: polynucleotides are a signal and a scaffold, not a filler and not gene therapy. They add almost no volume (so they will not "plump" a hollow cheek the way hyaluronic-acid filler does); they improve skin quality.

---

Rejuran vs other polynucleotide brands: the honest comparison

Because Rejuran is one brand in a crowded category, the meaningful axes are DNA source, molecular weight, concentration, country of origin/regulation and indication range, not an invented "scars vs elasticity" split between "polynucleotides" and "Rejuran."

The key honest points:

• All of these are polynucleotides. The differences are real but incremental, not categorical. There is limited high-quality head-to-head data directly comparing brands, so claims that one brand is dramatically "better" should be treated with caution.

• Salmon vs trout (Rejuran vs Plinest) is the most cited distinction. Both are well-established; the choice is often driven by what a clinic stocks, price, and injector preference, not a proven outcome gap.

• The old "PNs are for scars, Rejuran is for elasticity" framing is clinically incorrect. Rejuran has a dedicated scar variant (Rejuran S), and generic PNs also improve elasticity. The variant matters more than the brand for matching a concern.

This requires a medical consultation: the right brand, variant, depth and volume for your face is an individual clinical decision. No online guide can prescribe it.

---

Rejuran variants explained (the part most guides miss)

If your clinic offers Rejuran, you are not choosing one product, you are choosing a variant matched to your concern. This is where the real "which one for me" decision lives.

For men, the most common combinations are Healer for general skin quality and sun damage, S for acne or chickenpox scarring (common across the cheeks and jaw), and I for the tired, dark under-eye look that thicker male skin and screen time tend to exaggerate.

---

Quantified results: what the evidence actually shows

"Significant improvement" means nothing without numbers, but the honest picture is that the high-quality comparative evidence base is still thin. Here is what the published literature reports for polynucleotide / salmon-DNA injectables. Note that many studies are small and industry-linked, several once-cited trials have since been retracted, and individual results vary.

• Narrative reviews of polynucleotides and polydeoxyribonucleotides in dermatology describe consistent fibroblast stimulation, increased collagen and improved skin elasticity and hydration across the published case series and trials, while repeatedly flagging that sample sizes are small and head-to-head data between brands are limited.

• Instrumental (cutometer) studies of polynucleotide/PDRN treatments commonly report measurable improvements in skin elasticity over roughly 8-12 weeks, alongside parallel gains in hydration and surface roughness. The precise size of the improvement varies by study, product and protocol, so treat any single headline percentage with caution.

• A 2025 prospective, multicentre study of a highly purified polynucleotide for dry, chapped lips reported measurable improvements in hydration and clinical lip condition, an example of the regenerative, quality-over-volume effect these products are designed for.

What this means in plain terms:

• Onset: most men notice a "glow," smoother texture and better hydration around 2-4 weeks after the first session.

• Build-up: results accumulate over the course of 3-4 sessions as new collagen forms.

• Peak: typically around 2-3 months after completing the course.

• Duration: improvements generally last roughly 6-12 months, then taper. Maintenance sessions (often every ~6 months) are needed to sustain the effect, this is a treatment you repeat, not a one-off cure.

There is no guaranteed, permanent or fixed-percentage result. Outcomes depend on your age, sun damage, skin condition, the product, and how consistently you complete and maintain the course.

---

A man's skin: why the framing matters

Most Rejuran and polynucleotide content online is written for women. Male skin is genuinely different, and that changes how these treatments are used:

• Thicker dermis and more collagen at baseline, but men lose it in a more linear, often under-addressed way, sun and shaving damage compound this.

• Higher sebum and larger pores, so texture irregularity and enlarged pores are frequent male complaints that polynucleotides can soften.

• More facial vascularity, which can mean a slightly higher tendency to bruise at injection sites.

• Acne and acne-scar history is common, the cheeks and jawline are typical male scar zones where Rejuran S or scar-targeted PN is relevant.

• Beard area considerations: injectors plan around hair-bearing skin and shaving routines.

The goal for most men is not a "done" look, it is skin that looks less tired, less rough and less sun-beaten, without changing facial volume or shape. That low-visibility, quality-over-volume profile is exactly what polynucleotides deliver, which is why they suit men who want results no one can point to.

---

Bangkok pricing: real numbers (indicative, confirm at consult)

Bangkok is one of the most price-competitive cities in the world for polynucleotide treatments, partly because Korean and EU products are widely stocked and partly because demand is high. The figures below reflect current Bangkok market ranges and are indicative, confirm exact pricing at your consultation.

Why Bangkok is more affordable: a single Bangkok PN session (often THB 9,000-25,000) frequently undercuts equivalent UK central-London pricing (commonly £200-900 per session). The savings come from lower clinic overheads and direct product access, not lower-grade product, when you choose a properly licensed clinic. (We have removed the older article's unsourced "50-60% cheaper" claim in favour of these published ranges.)

What the price should include, and what affects it

Before you compare quotes, ask what is bundled. A transparent price typically covers:

• The consultation and skin assessment

• Numbing cream and the injection itself

• The product (clarify how many vials/cc and which variant)

• A follow-up review

What moves the price:

• Number of vials/cc and treatment area (full face needs more than under-eyes alone)

• Variant (Healer vs HB vs S vs I)

• Number of sessions in your course

• Injector seniority (doctor vs nurse) and clinic positioning

Note: polynucleotide treatments are cosmetic and are not covered by health insurance.

---

Who is a good candidate, and who should NOT have it

Polynucleotides suit men who want better skin quality, smoother texture, more hydration, softer fine lines, improved early acne scarring and a less sun-damaged look, without adding volume.

They are not for everyone. You should not proceed, or should proceed only after specialist clearance, if any of the following apply:

• Fish or salmon (or trout) allergy. These products are fish-DNA-derived. "Natural" does not mean risk-free, this is an absolute contraindication and a key reason an in-person history is mandatory.

• Pregnancy or breastfeeding (safety not established).

• Active skin infection, cold sore, or acne flare at the treatment site.

• A tendency to keloid or hypertrophic (raised) scars.

• Bleeding disorders or anticoagulant/blood-thinning medication (raises bruising and bleeding risk, needs medical clearance).

• Recent isotretinoin (Roaccutane) use, or active autoimmune/inflammatory skin disease.

• Unrealistic expectations (it improves skin quality; it does not lift, fill or reshape).

A clinician must take your history, examine your skin and confirm suitability before any injection. This is non-negotiable for a fish-derived prescription injectable.

---

The procedure, step by step

A typical Rejuran/polynucleotide appointment runs about 45-60 minutes:

1. Consultation and assessment. History (including allergy and medication review), skin analysis, and a plan for variant, areas, vials and number of sessions.

2. Cleansing and numbing. A topical anaesthetic cream is applied for ~20-30 minutes to keep discomfort low.

3. Injection. The polynucleotide is placed into the dermis as a series of small micro-injections (or via cannula for areas like under-eyes), commonly across the cheeks, under-eyes, forehead or targeted scars.

4. Immediate aftercare. Cooling and soothing product applied; the injector reviews your aftercare plan.

Pain level: with numbing, most men describe it as mild, brief stinging or pressure. Variants such as Rejuran HB that contain lidocaine can further reduce discomfort.

---

Recovery and aftercare timeline

Downtime is minimal, most men return to work the same day, but the early "bumps" are normal and worth understanding.

If a bump persists beyond ~1 week, or you develop spreading redness, significant pain, pus, warmth or fever, contact your clinic, these can signal infection or a nodule and need review.

---

Risks and side effects

Polynucleotides are generally well tolerated, but no injectable is "completely safe," and the older article's blanket "safe, natural" wording was misleading. Honest risk disclosure:

Common and expected (usually self-limiting):

• Injection-site swelling, redness, tenderness

• Temporary papules/bumps (the product depots) for a few days

• Bruising, more likely in men due to higher facial vascularity

Uncommon to rare:

• Persistent nodules or lumps

• Infection at the injection site

• Allergic/hypersensitivity reaction (heightened risk with fish/salmon allergy)

• Post-inflammatory pigment change, more relevant in deeper skin tones

Seek urgent care if you notice: spreading redness or warmth, severe or worsening pain, pus or fever (possible infection), or any sign of a severe allergic reaction (facial/lip/throat swelling, difficulty breathing), the latter is a medical emergency.

---

How to choose a safe clinic in Bangkok (and the red flags)

Bangkok's strength, choice and price, is also its risk: the market includes everything from licensed medical clinics to unlicensed pop-ups selling grey-market or counterfeit "salmon DNA." Because polynucleotides are injected and fish-derived, where and by whom you have this done matters more than the brand.

Green flags:

• A licensed medical clinic with a registered physician on site

• Treatment performed or directly supervised by a qualified doctor or trained medical injector

• Genuine, sealed, traceable product (ask to see the box and batch; ask the source)

• A real consultation, allergy screen and written aftercare plan

• Transparent, itemised pricing (variant, vials/cc, sessions)

Red flags, walk away:

• Prices that look too good to be true (counterfeit risk)

• No allergy/medical history taken

• No physician involvement; pressure to buy a big package on the spot

• Product decanted from unlabelled vials, or no batch information

• "Permanent" or "guaranteed" results claims

At Menscape, polynucleotide and Rejuran treatments are delivered in a men's-focused clinical setting with genuine product, a proper medical consultation and discreet care, the trust layer that matters most for an injectable.

---

Rejuran/PN vs other regenerative options for men

Polynucleotides are one tool. Here is where they sit against the alternatives men commonly ask about, so you can see what to combine or choose instead.

Many men combine polynucleotides (skin quality) with a separate volume or contouring treatment, the polynucleotide handles the "skin," the filler or device handles the "structure."

Booking: a single consultation can map which of these, if any, fits your face. Start with a Menscape men's aesthetics consultation or explore related skin and regenerative treatments.

---

Bottom line

• Rejuran is a polynucleotide, not a separate or rival category. The real comparison is Rejuran vs other PN brands (Plinest, Nucleofill, Croma) and, within Rejuran, which variant (Healer, HB, S, I).

• They work by stimulating your own fibroblasts to make collagen and elastin, they do not repair your DNA and do not add volume.

• Expect a course of 3-4 sessions, visible results in 2-4 weeks, a peak around 2-3 months, and longevity of roughly 6-12 months with maintenance.

• Bangkok pricing is roughly THB 9,000-25,000 per session (indicative), often well below UK/US equivalents.

• This is a prescription-grade medical procedure. A fish/salmon allergy is an absolute contraindication, and an in-person consultation and skin assessment are required before treatment.

Frequently Asked Questions

Are polynucleotides and Rejuran the same thing?

Effectively, yes, at the category level. Rejuran is a brand of polynucleotide injectable made from purified salmon DNA. "Polynucleotides" is the class of treatment; Rejuran is one product within it. So they are not two competing treatments. The meaningful comparison is Rejuran versus other polynucleotide brands (such as Plinest or Nucleofill) and choosing the right Rejuran variant for your concern.

So what should I compare instead?

Compare polynucleotide brands against each other (Rejuran, salmon-derived from Korea, versus Plinest, trout-derived from Italy, versus Nucleofill and others), and compare the variants within a brand (Rejuran Healer for general regeneration, HB for hydration, S for scars, I for under-eyes). The differences between brands are real but incremental; the variant you choose usually matters more than the brand.

Do polynucleotides repair my skin's DNA?

No. This is a common myth. Polynucleotides do not edit, repair or replace your own DNA. They act as a biological scaffold and signal in the dermis that stimulates your fibroblasts to produce more of your own collagen and elastin. The injected material is gradually broken down and absorbed.

How much does Rejuran or polynucleotide treatment cost in Bangkok?

Indicatively, around THB 9,000-25,000 per session depending on the variant, the number of vials/cc and the treatment area, with a full course of 3-4 sessions roughly THB 30,000-75,000. This is typically well below UK pricing (commonly £200-900 per session). These are cosmetic treatments and are not covered by insurance. Always confirm exact pricing at consultation.

How many sessions will I need and how long do results last?

Most protocols use a course of 3-4 sessions spaced about 2-4 weeks apart. You will usually see initial glow and texture change within 2-4 weeks, with the peak result around 2-3 months after finishing the course. Results generally last about 6-12 months, after which maintenance sessions (often every ~6 months) are needed to sustain them.

Who should NOT have polynucleotide or Rejuran injections?

You should avoid them, or get specialist clearance first, if you have a fish/salmon/trout allergy (an absolute contraindication, as these are fish-DNA products), are pregnant or breastfeeding, have an active skin infection or acne flare at the site, are prone to keloid scars, take blood thinners or have a bleeding disorder, recently used isotretinoin, or have an active autoimmune skin condition. An in-person consultation is required to confirm suitability.

Is it painful, and is there downtime?

With numbing cream, most men report only mild stinging or pressure. Downtime is minimal, you can usually return to work the same day, but expect small bumps at the injection points for a few days and possible minor bruising. Avoid heat, sauna, alcohol and strenuous exercise for 24-48 hours, and use SPF 50+.

Are polynucleotides better for men than for women?

They are equally relevant, but men's thicker, oilier, often more sun- and shave-damaged skin makes texture, pores, early acne scarring and tired under-eyes common male concerns that polynucleotides address well, without adding volume or changing facial shape. Injectors also plan around beard-bearing skin and shaving routines.

Are polynucleotides FDA-approved in the US?

The injectable form is not FDA-approved in the United States, where it is used only off-label; only topical or microneedling-delivered versions are marketed there. Polynucleotide injectables are, however, widely used in Asia and the EU. This is one reason many patients seek treatment in established Bangkok clinics; you should still verify the clinic is licensed and the product is genuine.

Can I combine Rejuran with fillers, Profhilo or other treatments?

Often, yes. Polynucleotides improve skin quality, while dermal fillers add volume or definition and Profhilo bio-remodels and hydrates, so they are complementary rather than competing. Many men pair a polynucleotide course with a separate volume or contouring treatment. The right combination and sequence should be planned at a medical consultation.

References

• Comparison of Polynucleotide and Polydeoxyribonucleotide in Dermatology: Molecular Mechanisms and Clinical Perspectives (PMC, 2024)

• From PDRNs to PNs: A Review of Polynucleotides in Regenerative and Aesthetic Dermatology (Biomolecules / MDPI, 2025)

• Polynucleotides and Polydeoxyribonucleotides in Dermatology: A Narrative Review (Journal of Cutaneous and Aesthetic Surgery)

• Clinical Efficacy and Safety of a Highly Purified Polynucleotide for Dry and Chapped Lips: A Prospective, Multicenter Study (PMC, 2025)

• Plinest vs Rejuran: Comparing Polynucleotides (Medica Depot)