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Why formulators keep asking for Trans-Resveratrol 98% Powder Polygonum Cuspidatum Extract Skin Care Factory Supply I’ve toured more than a few extraction facilities in the past decade, and—honestly—there are only a handful of actives that still get R&D teams properly excited. Trans-resveratrol is one of them. It’s clean, familiar to regulators, and increasingly backed by sensible stability data for topical use. In fact, when a product manager tells me they need fast-turn anti-oxidation support with real specs, I end up pointing to Trans-Resveratrol 98% Powder Polygonum Cuspidatum Extract Skin Care Factory Supply more often than not. What’s trending in 2025 Formulators are moving from generic “polyphenol blends” to single-ingredient actives with traceable origin and quantifiable trans:cis ratios. Clean-label claims are expected, but so are defendable test methods (HPLC over UV, please). There’s also a nudge toward smaller particle sizes for serum clarity and better dispersion—practical details that separate a good lab day from an annoying one. Quick spec snapshot Active Trans-Resveratrol ≈98% (HPLC) Botanical source Polygonum cuspidatum (primary); Vitis vinifera L. (alternative) Grades available 2%, 5%, 10%, 50%, 98% (HPLC) Appearance / mesh Off-white to white powder; 80–200 mesh options Trans:cis ratio ≥98:2 (typical, HPLC) Residual solvents Ethanol only; complies with ICH Q3C limits Heavy metals / micro Pb/Cd/Hg/As <10 ppm total (ICP-MS); TAMC <1,000 cfu/g; Yeast/Mold <100 cfu/g Packaging / shelf life 25 kg fiber drum; 24 months sealed, cool & dry Origin Building 23B1, No.2 Yuanboyuan St., Zhengding Area of China (Hebei) Pilot Free Trade Zone Process flow (how it’s made, briefly) Materials: dried Polygonum cuspidatum root; food-grade ethanol; purified water. Methods: ethanol extraction → filtration → concentration → crystallization → solvent switch/polish → drying → milling/sieving → final HPLC assay. Testing standards: HPLC assay; ICP-MS for metals; microbiology per ISO methods; residual solvents per USP <467>. Real-world stability: most serums show good color hold 3–6 months at room temp; airless packs perform best, which isn’t shocking. Where it fits Skin-care serums and boosters (1,000–5,000 ppm active, formulas vary) Anti-aging creams with vitamin C or ferulic acid synergy Sun-care aftercare gels (calming/antioxidant positioning) Nutricosmetics and premium nutraceuticals (labeling differs by market) Many customers say the dispersion is easier when pre-slurried in propanediol or ethanol, which matches our lab notes. And yes, it can tint slightly in high-pH systems—buffering helps. Why this factory supply stands out Consistent HPLC purity with batch CoAs back to the farm lot ISO 9001, ISO 22000, HACCP; Kosher/Halal available Customization: mesh size, granulation for tablets, low-odor polish, clean-label solvent path Lead time: usually 5–10 business days ex-warehouse (seasonality can nudge this) Vendor comparison (real-world) Criteria Finutra (Factory) Trader A Small Mill B Purity (HPLC) ≈98–99% ≈95–98% ≈90–96% Trans:cis control ≥98:2 typical Not always specified Varies by lot Traceability Full farm-to-drum Partial Limited Regulatory docs CoA, SDS, TDS, IFRA note on request CoA only CoA (basic) Test data (typical lot) HPLC assay: 98.5% trans-resveratrol; trans:cis 99:1; metals total <5 ppm; residual ethanol 1,200 ppm; TAMC 100 cfu/g; Yeast/Mold <10 cfu/g; PAHs meet EU cosmetic guidance. Real-world use may vary, but these numbers are steady across recent batches. Case notes from the field A mid-size EU skin-care brand swapped to Trans-Resveratrol 98% Powder Polygonum Cuspidatum Extract Skin Care Factory Supply for a C+Resveratrol daytime serum. Color stability improved in airless packs; claim support got clearer thanks to HPLC data. Another client used the 10% grade in gummies (interesting choice), reporting better flavor neutrality after a granulation tweak. Standards and compliance Manufactured under ISO 22716-aligned cosmetic GMP and ISO 9001 systems Testing references: USP <467> residual solvents; ICP-MS metals; ISO microbiology Ingredient listing per EU CosIng; safety positioning informed by EFSA assessments (for ingestible forms) Citations PubChem. Resveratrol (trans-). NIH Database. EFSA Journal. Safety of trans-resveratrol as a novel food (2016, updates as applicable). ISO 22716: Cosmetics—Good Manufacturing Practices (GMP). USP <467> Residual Solvents; USP General guidance for botanical articles. EU CosIng Database. Ingredient: Resveratrol.