Ingredient fundamentals
Trans-resveratrol is a specific polyphenol isomer. High-purity trans-resveratrol, botanical extracts and total-resveratrol materials are different commercial grades and should not be compared under one specification. The trans isomer is the form normally used for high-purity formulation discussions, while a plant extract may contain other constituents and cis-resveratrol. Procurement should begin with isomer-specific assay, production route and delivery format, not a generic “resveratrol” label.
Isomer, source & delivery
The trans isomer, source route, particle profile and delivery format all affect how a resveratrol grade should be evaluated. A plant extract and a high-purity molecule require separate naming, testing and formulation questions.
01 / ISOMER IDENTITY
High-purity trans-resveratrol should not be compared with a botanical extract or a total-resveratrol material as if they shared one specification. Confirm the trans-specific result, method, reporting basis and reference standard.
Particle size, crystal form, carrier and delivery format also affect how a grade can be screened. Low water solubility is a formulation consideration, not a reason to infer performance.
02 / DELIVERY CHECK
Low water solubility means a neat powder, lipid solution, fine dispersion and encapsulated grade should be screened as separate materials with different active bases.
Record solvent or carrier composition, particle or crystal behavior, light protection and trans-isomer retention before comparing results between formats.
Technical identity
Reference values are not a batch release document. Request the current specification and COA for the offered material.
| Ingredient identity | Trans-resveratrol; (E)-resveratrol; 3,5,4′-trihydroxy-trans-stilbene. |
|---|---|
| INCI / naming review | Resveratrol may apply to a high-purity molecule, while botanical material may require a plant-extract name such as Polygonum Cuspidatum Root Extract. Match the name to the actual material and market. |
| Isomer references | Trans: CAS 501-36-0. Cis: CAS 61434-67-1; these are not interchangeable identifiers. |
| Molecular formula | C14H12O3. |
| Molecular weight | 228.24 g/mol. |
| Target assay | 98% minimum trans-resveratrol by HPLC. Confirm trans-specific assay, dry-basis or as-is reporting and lot result rather than a total-resveratrol figure. |
| Source & production | Botanical extraction, synthesis or another stated route may be offered. Confirm the source, origin, process and GMO statement where relevant for the actual grade. |
| Contaminants | For botanical routes, review pesticide residues, PAH and emodin controls. For other routes, review process residues and residual solvents. Source route alone is not proof of absence. |
| Particle & delivery profile | Request particle size, crystal form and any carrier, encapsulation or microdispersion composition. Treat each delivery format as a separate grade. |
| Appearance | White to off-white or light beige powder, subject to specification. |
| Solubility | Low water solubility; confirm solvent compatibility, wetting and a suitable dispersion, lipid or encapsulation system in the intended base. |
| Light, oxygen & heat | Monitor trans-to-cis isomerization, color and assay under light, oxygen, heat and the intended pH and packaging conditions. |
| Storage & use review | Store tightly closed and protected from light according to the supplied specification. Confirm cosmetic-grade suitability, market requirements and finished-formula safety separately. |
Preliminary technical values are provided for project discussion. Confirm every value against the current specification and lot-specific COA for the offered material.
Formulation concepts
These are starting concepts, not finished formulas. Set the active level, phase, process, preservation and packaging from the current specification, safety assessment and stability work.
01 / SERUM
Screen a compatible emollient or lipid-solvent system and monitor complete dissolution, crystallization, color and trans-isomer retention in light-protective packaging.
02 / EMULSION
Use a validated solubilized or fine-dispersion premix. Check crystal growth, centrifuge behavior, freeze-thaw stability and compatibility with the final package.
03 / DELIVERY
Evaluate a carrier-based grade when a conventional water serum is required. Confirm carrier composition, active basis, particle behavior, viscosity and storage stability.
Quality & documentation
Document availability, scope and lot applicability must be confirmed for each quotation.
COA, HPLC chromatogram, isomer assay, method, basis and reference-standard information.
Production route, botanical species when applicable, origin, process description, carrier and GMO statement where relevant.
Residual solvents, pesticide residues, heavy metals, process residues, PAH or emodin results according to the buyer specification.
Particle size, crystal or delivery format, light/heat stability, storage, packaging and SDS.
For supplier qualification, request certificates showing the holder, scope and validity dates. Certification or regulatory status must be confirmed for the offered material and supply entity.
Research context
Database records and publications provide technical context. They are not tests of the offered batch or proof of finished-cosmetic performance.
Use the PubChem record as a starting point for molecular identity and synonyms, then match it to the offered isomer and grade.
Open research sourceReview topical-skin literature by material identity, vehicle, dose and study design before using it in technical communication.
Open research sourceTrela and Waterhouse (1996) examines isomer-specific UV measurements and solution stability. Relevant to assay selection and light-protection review.
Open research sourceZupančič et al. (2015) examines solubility and degradation. Review the study conditions before applying them to a cosmetic base.
Open research sourceSource & evidence route
Public databases and literature provide context only. They do not replace Cosveta’s specification, TDS, SDS or lot-specific COA.
Review trans-resveratrol identity and cosmetic naming as a starting point; confirm the actual isomer, grade and destination-market status with Cosveta.
Open sourceReview topical material, vehicle and endpoint; published research is not a supplier COA or finished-cosmetic claim.
Open sourceUse the cited DOI and PubMed records to review isomer, light, pH and temperature variables before bench testing.
Open sourceCommercial supplier links have been removed. Verify every current product value against Cosveta’s supplied specification and lot-specific COA.
Buyer questions
This page targets 98% minimum trans-resveratrol. Confirm the trans-specific result, method and reporting basis on the offered grade.
No. Botanical, synthetic and other production routes may be available. Verify the identity and route on each quotation.
No. A plant extract, total-resveratrol material and high-purity trans-resveratrol should be treated as separate grades with separate naming and controls.
Low aqueous solubility makes direct addition unreliable. Evaluate a suitable delivery system and test wetting, crystallization, trans-isomer stability and packaging.
Sample & supply review
Request a sample, compare a batch or qualify a supply option. Include your country, formulation, required documents and order volume.
MOQ, packaging, sample availability, lead time and document scope are confirmed in the quotation.
Selected ingredientTrans-Resveratrol for Cosmetic Formulations