PDRN (polydeoxyribonucleotide) is a DNA-derived skincare ingredient sourced from salmon that has taken the K-beauty and cosmetic ingredient world by storm. This guide covers everything formulators and procurement professionals need to know about PDRN—from its mechanism of action, molecular weight considerations, and formulation compatibility to regulatory compliance and post-procedure care applications.
Key Takeaways
- PDRN (polydeoxyribonucleotide) is a DNA-derived ingredient sourced from salmon, known for its regenerative and skin-repairing properties
- Molecular weight matters: cosmetic-grade PDRN (50-300 kDa) is specifically fragmented for topical penetration; injectable-grade (1000-1500 kDa) is designed for slow tissue degradation
- PDRN is most commonly used in serums, creams, masks, and post-procedure care products at concentrations between 1-10%
- Global regulatory status: listed in China IECIC, EU CosIng-approved (BSE/TSE-free certified), compliant for cosmetic use worldwide
- Critical formulation constraints: PDRN is highly sensitive to cationic ingredients, divalent metal ions, and high-shear post-neutralization of Carbomer—understanding these is key to stable product development
What is PDRN?
Sodium DNA (also known as sodium deoxyribonucleotide or PDRN) is a biologically active compound derived from purified fish sperm or gonadal tissue (often wild salmon or sturgeon) and neutralized with sodium ions. It is widely used in dermatology, cosmetics, and medicine for its tissue-regenerating and anti-inflammatory properties.
PDRN has been used in injectable form for wound healing and tissue regeneration in medical settings for decades. More recently, it has emerged as a trending topical ingredient in K-beauty and global cosmetic formulations.
How It Works
- Cell Proliferation: It stimulates cellular metabolism and accelerates DNA synthesis, encouraging rapid cell turnover and regeneration
- Collagen Production: It triggers pathways that improve skin elasticity and support the production of new collagen
- Anti-Inflammation: It binds to specific receptors (like adenosine A2A) that help block inflammatory signals and reduce redness
Key Benefits at a Glance
- Moisturization: Helps prevent water loss and protects cell membranes from oxidative stress
- Melanin Inhibition: Aids in suppressing the expression of melanin-producing genes, helping to brighten the skin and fade dark spots
The Formulation Crux: Molecular Weight and Penetration
The single most common question formulation scientists ask when encountering PDRN is: “How does such a large molecule penetrate the skin?”
The answer lies in molecular weight engineering:
| Grade | Molecular Weight | Application | Key Characteristic |
|---|---|---|---|
| Medical injectable | 1000 – 1500 kDa | Wound healing, tissue regeneration | Designed for slow enzymatic degradation in tissue |
| Cosmetic transdermal | 50 – 300 kDa | Serums, creams, masks | Enzyme- or ultrasonication-fragmented for enhanced skin penetration |
| Nano/liposomal | < 50 kDa | High-penetration ampoules | Liposome-encapsulated for targeted delivery to deeper epidermal layers |
Our cosmetic-grade PDRN undergoes controlled enzymatic fragmentation to achieve a molecular weight distribution in the 50-300 kDa range—optimized for topical bioavailability while retaining biological activity. For formulators targeting deep epidermal delivery, liposomal encapsulation versions are also available.
💡 Professional Tip
When sourcing PDRN for topical formulations, always request the molecular weight distribution data from your supplier. A product labeled simply as “PDRN” without MW specification may contain overly large fragments with poor skin penetration. Our COA includes full MW profile by HPLC.
Quick Specs:
| Parameter | Information |
|---|---|
| INCI Name | Sodium DNA (commonly marketed as Polydeoxyribonucleotide / PDRN) |
| CAS Number | 73049-39-5 (Sodium DNA) |
| Source | Salmon / trout sperm (BSE/TSE-free certified) |
| Appearance | White to off-white powder |
| Solubility | Water-soluble (recommend pre-dispersion in glycerin or butylene glycol at 1:5 ratio) |
| Recommended dosage | 1-10% (typical: 2-5%) |
| Optimal pH range | 5.5 – 7.0 |
| Cosmetic-grade MW | 50 – 300 kDa (controlled enzymatic fragmentation) |
| Common product types | Serum, cream, mask, ampoule, essence, post-procedure care |
What is Salmon DNA and Why Is It Used in Skincare?
Salmon DNA refers to the genetic material extracted from salmon sperm cells. The reason salmon DNA is used in skincare rather than other animal DNA comes down to two key factors:
1. Molecular similarity to human DNA
Salmon DNA has a base pair composition that is approximately 97% similar to human DNA. This high compatibility means it is recognized by human skin cells and can trigger biological repair pathways without triggering an immune response.
2. Regenerative properties
Salmon-derived PDRN has been extensively studied for its ability to promote tissue regeneration. It provides nucleotides and nucleosides that serve as building blocks for DNA synthesis in rapidly dividing cells—including skin fibroblasts.
How Does PDRN Work?
PDRN exerts its biological effects through several well-documented mechanisms:
- Purinergic receptor activation: PDRN binds to A2A adenosine receptors on fibroblasts and keratinocytes, triggering downstream signaling that promotes cell proliferation
- Collagen synthesis stimulation: By activating TGF-β1 and Smad signaling pathways, PDRN upregulates collagen type I and III production
- VEGF upregulation: PDRN promotes vascular endothelial growth factor (VEGF) expression, improving blood flow and nutrient delivery to the skin
- Anti-inflammatory effects: PDRN inhibits pro-inflammatory cytokines including TNF-α and IL-6, accelerating the resolution of post-procedure erythema
Common Applications
- Skincare & Cosmetics: Found in lifting serums, brightening lotions, and post-procedure creams to repair damage, reduce wrinkles, and provide moisture retention
- Aesthetic Treatments: Used in medical-grade mesotherapy and injectable treatments to boost skin vitality and heal scarring
- Wound Healing: Studied for its ability to enhance tissue repair and accelerate the healing process in mucous membranes and skin
PDRN Benefits for Skin
| Benefit | Mechanism | Evidence Level |
|---|---|---|
| Skin barrier repair | Promotes keratinocyte proliferation and differentiation | Clinical studies |
| Anti-aging | Boosts collagen I/III and elastin synthesis | In vitro + clinical |
| Wound healing | Accelerates cell migration and tissue regeneration | Extensive medical data |
| Hydration | Improves moisture retention via barrier strengthening | Clinical studies |
| Reduced inflammation | Inhibits NF-κB and pro-inflammatory cytokines, blocks adenosine A2A | In vitro studies + clinical |
| Melanin inhibition | Suppresses melanin-producing gene expression | In vitro studies |
| Post-procedure recovery | Reduces erythema and downtime after microneedling, laser, and microneedling | Clinical case series |
Post-Procedure Care: PDRN’s Strategic Advantage in 2026
As the aesthetic medicine market shifts toward the “pre-treatment boost + post-procedure recovery” model, PDRN has emerged as the ingredient of choice for post-procedure formulations. Unlike aggressive active ingredients (high-concentration AHAs, retinoids) that can irritate compromised skin barriers, PDRN actively accelerates barrier recovery, reduces erythema, and shortens the “down-time” window—making it ideal for:
- After microneedling or microneedling treatments
- Post-laser resurfacing recovery masks and ampoules
- Post-chemical peel soothing serums
- Daily “longevity skincare” for maintaining treatment results between professional procedures
PDRN in Cosmetic Applications
Typical Product Types
| Product Type | Recommended Concentration | Key Benefits |
|---|---|---|
| Serum | 2-5% | Anti-aging, barrier repair, post-procedure |
| Cream | 1-3% | Daily moisturizing and barrier maintenance |
| Mask (sheet / wash-off) | 3-10% | Intensive recovery, post-procedure soothing |
| Ampoule | 5-10% | High-concentration treatment, clinical synergy |
| Eye cream | 1-2% | Gentle periorbital barrier support |
Formulation Guide: Compatibility and Processing
PDRN (Sodium DNA) carries a strong negative charge due to its highly charged phosphate backbone. This chemical property imposes specific formulation constraints that every formulating chemist must understand:
Salt Tolerance and Charge Interactions:
- ❌ Avoid: Cationic surfactants, cationic conditioning agents (Polyquaternium series), high concentrations of cationic preservatives—these will cause charge neutralization, leading to flocculation or precipitation
- ❌ Avoid: High concentrations of divalent or multivalent metal ions (e.g., Zinc PCA, Copper Tripeptide-1, Magnesium Sulfate, Calcium Chloride), as they can chelate with the phosphate backbone of PDRN, causing turbidity, phase separation, or precipitation
- ✅ Preferred partners: Nonionic surfactants, anionic surfactants (gentle), amphoteric surfactants (at low concentrations)
- ✅ Compatible preservatives: Phenoxyethanol, ethylhexylglycerin, sodium benzoate (test compatibility with your specific preservative system)
Thickener Compatibility:
| Thickener | Compatibility | Process Notes |
|---|---|---|
| Carbomer | ✅ Good | Critical order: Disperse Carbomer and hydrate fully → add PDRN solution under gentle agitation → lastly add neutralizing agent (TEA/NaOH) to build viscosity. Do not neutralize Carbomer before adding PDRN—the viscous gel will trap PDRN locally and may cause phase separation or viscosity drop. |
| Xanthan gum | ✅ Good | Cold-process compatible; add PDRN after full hydration |
| Sodium hyaluronate | ✅ Excellent | Synergistic barrier-support benefits; sequence-independent |
| HEC (Hydroxyethylcellulose) | ✅ Good | Neutral polymer, no charge interaction concerns |
Dissolution and Processing Protocol:
PDRN powder does not dissolve instantly in water. For consistent results in production:
- Pre-dispersion: Pre-wet PDRN powder in glycerin, butylene glycol, or propylene glycol at a 1:5 ratio (1 part PDRN : 5 parts glycol)
- Hydration: Add the pre-dispersion to the water phase at 25-35°C with moderate stirring
- Temperature control: PDRN is heat-sensitive—always add during the cool-down phase (below 40°C). Never add to hot water phase (above 50°C)
- Shear caution: Avoid high-shear mixing after PDRN addition. Gentle paddle agitation is sufficient
- pH adjustment: Adjust final formulation pH to 5.5-7.0 after PDRN addition
- Packaging: Store finished products in opaque airless packaging to prevent UV and oxidative degradation
Global Regulatory Status (2026)
Regulatory compliance is a non-negotiable gate for B2B procurement. Here is the current status across key markets:
| Market | Status | Notes |
|---|---|---|
| United States | GRAS for medical devices; cosmetic use permitted | No FDA monograph for cosmetic PDRN; must be formulated as cosmetic, not drug |
| European Union | Listed in CosIng database as Sodium DNA | BSE/TSE-free certification required for animal-derived source material |
| China | Listed in IECIC (2021 version) — Sodium DNA | ✅ Fully compliant for import cosmetics registration |
| Korea | Approved as cosmetic ingredient | K-beauty origin market; extensive safety history |
| Japan | Cosmetic ingredient status | Requires documentation of source origin and purification process |
✅ Our supply chain: All PDRN sourced from BSE/TSE-free certified salmon suppliers. Full documentation for China IECIC filing, EU CosIng compliance, and US cosmetic ingredient registration available with each shipment.
FAQ
Q1: What is PDRN and how is it used in skincare?
A: PDRN (polydeoxyribonucleotide) is a DNA-derived ingredient from salmon sperm that promotes skin regeneration. It is used in serums, creams, masks, and ampoules at concentrations between 1-10%, depending on product type. Cosmetic-grade PDRN is enzyme-fragmented to 50-300 kDa for optimized topical penetration.
Q2: What are the benefits of PDRN for skin?
A: PDRN helps repair the skin barrier, boost collagen production, improve hydration, reduce inflammation, accelerate wound healing, and speed up post-procedure recovery. It is widely used in anti-aging, barrier repair, and professional aftercare formulations.
Q3: What molecular weight PDRN should I use for topical formulations?
A: For cosmetic topical applications, 50-300 kDa is recommended. This range balances biological activity with transdermal bioavailability. Larger fragments (1000+ kDa) are suitable for medical injectables but will not penetrate effectively in leave-on topical formulations.
Q4: Can PDRN be combined with cationic ingredients or divalent metal ions?
A: Caution is required on two fronts. First, PDRN is polyanionic and may flocculate with cationic surfactants or polyquaterniums. Second, divalent metal ions (Zn²⁺, Cu²⁺, Ca²⁺, Mg²⁺) can chelate with PDRN’s phosphate backbone, causing turbidity or precipitation. Avoid high concentrations of Zinc PCA, Copper Tripeptide-1, or Magnesium Sulfate in the same phase. Always test compatibility in your specific system.
Q5: What preservatives work with PDRN formulations?
A: Phenoxyethanol, ethylhexylglycerin, and sodium benzoate are generally compatible. Avoid cationic preservative systems. Always conduct accelerated stability testing with your chosen preservative combination.
Q6: Is PDRN compliant for sale in China?
A: Yes, Sodium DNA (the INCI name corresponding to PDRN) is listed in the IECIC 2021 version. Our supply includes full documentation for China import cosmetics registration, including BSE/TSE-free certification and COA.
Q7: Where can I buy cosmetic-grade PDRN for formulations?
A: We supply cosmetic-grade PDRN powder (50-300 kDa) and solution forms with full regulatory documentation. See the section below for sample requests and technical support.
Explore Our PDRN Products
We offer high-purity cosmetic-grade PDRN derived from BSE/TSE-free certified salmon sources:
Available forms:
- PDRN Powder (Cosmetic Grade): Purity ≥ 99%, MW 50-300 kDa, water-soluble
- PDRN Solution (1%): Ready-to-use liquid form, ideal for small-batch trials (preserved with 0.5% Phenoxyethanol; preservative-free sterile-packed versions available upon request)
- Liposomal PDRN: Encapsulated for enhanced epidermal delivery (custom order)
Full documentation package with every order:
- COA with HPLC molecular weight distribution profile
- BSE/TSE-free certification
- MSDS
- China IECIC compliance documentation
- EU CosIng compliance dossier
Technical support:
- Request our tested benchmark frame formulations for:
- Anti-aging serum with PDRN (2% and 5% versions)
- Post-laser repair mask with PDRN
- Daily barrier-support cream with PDRN + Ceramide Complex
- Typical MOQ: 1 kg (powder), 25 kg (solution)
- Stock status: In stock, domestic delivery within 3-5 working days, international within 7-14 working days
[Request Free Sample] | [Download Full COA] | [Request Frame Formulations] | [Contact Technical Team]
Any questions? Our technical formulation team is ready to help. Reach us at info@yoursite.com.
References
- Kim, S.K., 2023. Polydeoxyribonucleotide: Mechanisms and Clinical Applications in Dermatology. Journal of Cosmetic Dermatology.
- Lee, J.H., et al., 2022. Effects of Topical Polydeoxyribonucleotide on Skin Barrier Function. International Journal of Molecular Sciences.
- CosIng Database – Sodium DNA. European Commission. Accessed 2026.
- Kwon, T.R., et al., 2021. PDRN and Its Role in Tissue Regeneration: A Systematic Review. Molecules.
- Noh, T.K., et al., 2020. Comparison of the Efficacy of Polydeoxyribonucleotide and Hyaluronic Acid for Skin Rejuvenation. Dermatologic Surgery.
- China NMPA. List of Cosmetics Raw Materials that Have Been Used (2021 Edition). Entry: Sodium DNA.