Polynucleotides have crossed into mainstream aesthetics in 2026, and with that crossing comes a flood of brand names that all sound vaguely similar. Rejuran. Plinest. Juvelook. Nucleofill. PDRN. Skin boosters. Salmon DNA injections.
Patients are researching these treatments and running into a wall of overlapping terminology with no neutral guide to what any of it actually means. This is that guide.
What All PNs Have in Common
Before the differences, the foundation: all polynucleotide products share the same core mechanism. They deliver chains of DNA fragments — derived from purified salmon or trout DNA — into the skin, where they bind to cell surface receptors and trigger biological repair processes:
- Stimulating fibroblasts to produce more collagen and elastin
- Increasing local growth factor activity
- Reducing chronic inflammation
- Improving tissue hydration at the cellular level
The result in all cases is gradual skin quality improvement — not volume, not lifting, but genuine regeneration of the tissue itself. This is why PNs are categorically different from HA fillers. Where a filler adds something, a PN makes your skin better at being skin.
The Key Differentiating Factors Between Brands
Before the brand comparisons, it helps to understand the three variables that actually create meaningful differences between PN products:
1. **Molecular weight (chain length)**: Longer-chain polynucleotides (high molecular weight) tend to stay more localized at the injection site, making them better for targeted area treatment. Shorter-chain PDRN products diffuse more widely, which can be an advantage for overall skin quality and a disadvantage for precision targeting.
2. **Concentration**: The amount of PN per milliliter varies significantly between products. Higher concentration isn't always better — it depends on the treatment goal and injection depth.
3. **Formulation additions**: Some PN products are pure polynucleotides in a saline base. Others add hyaluronic acid, amino acids, vitamins, or growth factors — creating hybrid products that combine PN's regenerative mechanism with additional hydration or nutritional support.
Rejuran — The Original
**Origin**: South Korea (Pharris/Hugel) — the product that created the modern PN aesthetic category
**What it is**: High-purity PDRN (polydeoxyribonucleotide) derived from salmon sperm DNA. Rejuran was the first product to establish PN aesthetics as a clinical category in Asia, where it has been used since the early 2010s.
**Best for**:
- Under-eye area (Rejuran I is specifically formulated for the periorbital zone)
- Full-face skin quality improvement
- Patients with sensitive or reactive skin — Rejuran has the longest clinical track record of any PN product
**Versions**:
- Rejuran S — standard formulation, full face
- Rejuran I — higher viscosity, specifically designed for the delicate under-eye zone
- Rejuran Healer — lower concentration, used for superficial skin quality across large areas
**Protocol**: Typically 3–4 sessions, 4 weeks apart. Maintenance every 6–9 months.
Plinest — The European Clinical Standard
**Origin**: Italy (Mastelli) — developed for clinical wound healing before being adopted for aesthetic use
**What it is**: High-molecular-weight polynucleotides in a pure formulation without additional active ingredients. Plinest's clinical background gives it one of the most rigorous safety profiles of any PN product currently available.
**Best for**:
- Patients prioritizing clinical evidence over trend status
- Skin laxity and crepiness improvement in the neck and décolletage
- Patients who have had filler complications and want a low-risk regenerative alternative
**Versions**:
- Plinest — standard aesthetic formulation
- Plinest Eye — optimized for periorbital use
**Protocol**: 3 sessions, 2–4 weeks apart. Results build over 8–12 weeks.
Juvelook — The Hybrid
**Origin**: South Korea (Across) — designed specifically to combine PN regeneration with immediate HA hydration
**What it is**: A combination product containing both polynucleotides and low-molecular-weight hyaluronic acid. This hybrid formulation produces both the immediate hydration effect of a skin booster and the gradual collagen-stimulating effect of a pure PN.
**Best for**:
- Patients who want visible immediate results alongside longer-term regeneration
- Dehydrated skin lacking both elasticity and hydration
- Patients who've tried pure HA skin boosters but want longer-lasting improvement
**Versions**:
- Juvelook — standard PN + HA formulation
- Juvelook Volume — higher HA concentration for mid-face
**Protocol**: 3 sessions, 4 weeks apart. Results visible within 2 weeks due to the HA component.
Side-by-Side Comparison
[Find providers offering polynucleotide treatments in your city, ranked by Natural Integrity and Innovation Score: Search VerifiedAesthetics →](https://www.verifiedaesthetics.com/find-providers?q=Polynucleotides)
[Want to know if your shortlisted provider has PN expertise? Get your free 2026 clinic safety audit →](https://www.verifiedaesthetics.com/audit)
Frequently Asked Questions
Are these products FDA-approved?
As of 2026, polynucleotide injectables are not individually FDA-approved for aesthetic use in the US. They are legally available through compounding pharmacies and are used off-label by licensed medical providers.
How do I know which one to ask for?
Start with your primary concern: if it's under-eye hollowing and crepiness, Rejuran I is the most targeted option. If you want overall skin quality improvement with clinical backing, Plinest. If you want fast visible hydration plus longer-term regeneration, Juvelook.
Can these products be combined?
Yes — some providers layer different PN products across treatment sessions or combine PN treatment with other modalities like RF microneedling, structural volumizers, or neurotoxins.
How do I find a provider who offers these specific products?
Most US directories don't filter by PN product brand. VerifiedAesthetics tracks which providers offer polynucleotide treatments and scores them partly on the Innovation Score component of the Clarity Score™.
Is there a significant price difference between the three?
Yes — expect Rejuran and Plinest to run $450–$700 per session; Juvelook is often slightly higher at $500–$800 due to the hybrid formulation.