KWDN-RT-CG is INNO’s Salmon PDRN powder for clear water-based skin-care formulas. Its INCI name is Sodium DNA, and the material is derived from salmon milt. The average molecular weight is below 1000 kDa. A 1% aqueous solution is clear, and the powder has no odor. These properties suit serums, essences, toners and gels where haze or raw-material odor would be noticeable.
PDRN is the product-category name used in the market. Sodium DNA is the INCI name for this grade. KWDN-RT-CG is a cosmetic-grade raw material for topical products and is not supplied for injection, pharmaceutical use or medical devices.
Key Benefits of Salmon PDRN Sodium DNA Powder (KWDN-RT-CG)
The clear 1% solution works well in transparent or lightly colored products. Polymers, salts, fragrance, preservatives and pH adjustment may still introduce haze, so the finished formula needs its own clarity check.
KWDN-RT-CG is specified as odorless, which removes one possible odor source from low-fragrance or fragrance-free formulas. The scent of the finished product depends on the rest of the formula.
The average molecular weight is specified below 1000 kDa. This separates KWDN-RT-CG from the higher-molecular-weight PN grade in the same Sodium DNA range. Molecular weight defines the grade; it does not prove skin penetration or cosmetic efficacy.
| Solution appearance | Clear at 1% (w/v) / 1% |
|---|---|
| pH | 6.0 to 8.0 (current specification) |
| 260/280 nm absorbance ratio | 1.8 to 2.0 |
| Average molecular weight | <1000 kDa |
| Assay | 90 to 120% (current specification) |
| Loss on drying | ≤15% (w/w) |
| Ignition residue | ≤30% (w/w) |
| Heavy metals | ≤10 µg/g as Pb |
| Aerobic bacterial count | ≤500 cfu/g |
| Molds and yeast | ≤100 cfu/g |
| Specified microorganisms | Not detected |
Recommended Applications
Transparent serums, essences and toners are the most direct applications because the raw material forms a clear solution and does not introduce a noticeable odor. Clear gels and gel masks are also possible, provided the selected thickener and electrolyte level do not create haze.
KWDN-RT-CG can also be used in gel creams, lotions and creams through the water phase. Once the emulsion is complete, check pH, color, odor, viscosity, preservation and package compatibility rather than relying on the appearance of the raw-material solution.
Using KWDN-RT-CG in a formula
Prepare a uniform solution in purified water before adding high levels of electrolytes or finishing the rheology system. For a transparent product, inspect the formula again after the thickener, salts, fragrance and preservatives are present. Stability and preservation testing should use the final formula and intended package.
Choosing between related INNO products: PDRN or PN?
| Selection point | KWDN-RT-CG Salmon PDRN | KWPN-OM-CG Salmon PN |
|---|---|---|
| Molecular weight | <1000 kDa | ≥1000 kDa |
| Formula direction | Clear water-based PDRN products | More body in the water phase / |
| Use this grade when | The purchase specification requires a PDRN grade below 1000 kDa | The purchase specification requires high-molecular-weight Sodium DNA |
The two grades share the INCI name Sodium DNA, but their molecular-weight ranges and solution behavior are different. A grade change requires a new formulation and stability check.
Ordering and storage
| Packaging | 2 g/bag |
|---|---|
| Minimum order quantity | 100 g |
| Storage | Sealed, protected from light, 2 to 10°C |
| Shelf life | 24 months under the stated storage conditions |
| Transportation | Room-temperature transportation for no more than 7 days |
Use clean, dry tools after opening. Keep the bag open only as long as needed, reseal it after sampling and return it to cold storage.
Frequently asked questions
Are PDRN and Sodium DNA the same name?
PDRN is the product-category term commonly used in the market. Sodium DNA is the INCI name for KWDN-RT-CG. A purchasing comparison should also include the source, molecular-weight specification and batch controls.
What should I compare between Salmon PDRN suppliers?
Check the INCI name, salmon-source declaration, molecular-weight specification, 260/280 nm ratio, assay basis, 1% solution appearance, loss on drying, heavy metals and microbiological limits. These items show whether two offers are close enough for a meaningful sample comparison.
Does molecular weight below 1000 kDa prove better skin penetration?
No. The value identifies the grade but does not prove penetration or finished-product efficacy. Any such claim needs evidence from the intended formula at the actual use level.
Is KWDN-RT-CG vegan or suitable for injection?
No. The material is derived from salmon milt and cannot support a vegan claim. It is supplied only as a cosmetic-grade ingredient for topical products.
Request a PDRN sample for your formula
For sample selection, provide the product format, target appearance, process and destination market. INNO will confirm the grade and supply the current specification, COA and sample information for KWDN-RT-CG.
