Polygonum Cuspidatum Extract

Product Description

Our high-purity Polygonum Cuspidatum Extract is standardized from Polygonum cuspidatum Sieb. et Zucc. root via controlled hydro-ethanol extraction at direct factory facilities, with batch COA traceability and typical resveratrol and polydatin profiling available on request.

Trans-resveratrol, polydatin, and emodin polyphenols scavenge ROS, modulate MMP-1 collagen degradation, inhibit tyrosinase-linked melanogenesis, and downregulate NF-κB inflammatory signals in aqueous cosmetic systems stable for daily use.

Unlike isolated synthetic resveratrol, this CosIng-listed Japanese knotweed matrix delivers synergistic stilbene and anthraquinone actives suited to anti-aging serums, urban-defense emulsions, and brightening essences where formulators need CAS-listed bulk supply with consistent polyphenol indexing.

Product Specification

• INCI Name: POLYGONUM CUSPIDATUM ROOT EXTRACT
• CAS No.: 90147-05-0
• Botanical Source: Polygonum cuspidatum Sieb. et Zucc., root
• Extraction Solvent: Ethanol/water (70:30) (Typical)
• Active Marker: Resveratrol ≥0.5%; total polyphenols ≥5.0% (Typical)
• Extraction Ratio: 10:1 (Typical)
• Appearance: Light brown to amber liquid or fine powder (Typical)
• Solubility: Dispersible in water; soluble in glycols and ethanol (Typical)
• Suggested pH: 4.0–6.5 in finished formulas (Typical)
• Assay Method: HPLC for resveratrol and polydatin; UV for total polyphenols (Typical)
• Shelf Life: 24 months sealed, below 25°C (Typical)
• Standard Packaging: 1 kg / 5 kg / 25 kg
• Storage: Keep sealed, away from light, heat, and moisture
• Regulatory Status: Listed in CosIng as POLYGONUM CUSPIDATUM ROOT EXTRACT
• Quality & Testing: Typical COA covers resveratrol, polyphenols, moisture, heavy metals within limits
• Compliance Note: For cosmetic use only; not for food or drug; patch test advised for sensitive skin

Key Benefits & Applications

This Japanese knotweed root extract delivers resveratrol-driven antioxidant, anti-aging, and brightening benefits for premium treatment and urban-defense care lines.

• Resveratrol-driven sirtuin-linked dermal revitalization supports anti-aging serums and overnight recovery masks at 0.5–2% w/w.
• MMP-1-modulating collagen matrix support in firming treatment creams and neck-decollete lifting lotions at 1–3%.
• UV-stress photo-defense in daytime protective emulsions and environmental-shield day fluids.
• Resveratrol and polydatin ROS scavenging aids antioxidant day serums and pollution-exposed facial mists.
• NF-κB-linked inflammaging blunting in post-exposure calming lotions and sensitive-skin emulsions.
• Stilbene tyrosinase pathway modulation in tone-correcting brightening essences and dark-spot care gels.

Formulation Guidelines

Apply standard plant-extract handling to preserve stilbene stability in water-based cosmetic systems.

• Suggested use level: 0.5–3% w/w in serums, emulsions, essences, and spot-care gels.
• Add during cool-down below 40°C to preserve resveratrol stability (Typical).
• Pre-disperse in glycerin or propanediol; protect from prolonged UV and heat exposure.
• Maintain formula pH 4.0–6.5; avoid strong oxidizers and high-alkaline systems above pH 7.
• Perform compatibility testing with metal ions and peroxide-rich bleaching systems above 1% load.
• Synergy: Ferulic Acid stabilizes resveratrol-rich knotweed polyphenols in antioxidant emulsions at 0.3–0.5%.