RAWESS · Knowledge
Botanical Extract Standardization: A Buyer’s Guide
A plant name and a marker percentage are not enough to compare cosmetic botanical extracts. Standardization needs a clear marker definition, analytical method and description of the rest of the supplied material.
Specify the plant and extract
Request the botanical identity, plant part, extraction process, carrier and full supplied composition. Different plant parts or extraction processes may produce different constituent profiles. Confirm whether the offer concerns a broad extract, a standardized fraction or a defined compound.
Interpret the marker assay
Ask which compound or group of compounds the percentage represents and how it is measured. Total phenolics, total catechins, total triterpenes and a named individual marker are different specifications. Do not read a total-fraction result as the percentage of one constituent.
Set risk-based acceptance checks
Review relevant microbial, pesticide, residual-solvent and elemental-impurity requirements with quality and regulatory teams. Choose requirements appropriate to the raw material and destination market. Evaluate color, odor, dispersion and stability in the complete formulation.
Compare the supplied options
| Option | Main purchasing check |
|---|---|
| Standardized extract | Review the marker plus the wider extract and carrier |
| Defined marker compound | Review identity, assay and relevant impurities of the compound |
Equal marker weights do not establish equivalent composition, sensory properties or performance.
Is a standardized extract automatically water-soluble?
No. Confirm whether the material dissolves or disperses, whether a carrier is present, and the conditions used to describe its behavior. Assess clarity and sedimentation in your intended formula.
Ingredient specifications and downloadable guides
- Green Tea EGCG — Download English product PDF
- Centella Asiatica 90% — Download English product PDF
- Licorice Glabridin 40% — Download English product PDF
- Rosemary Antioxidant — Download English product PDF
Shortlist the grade that fits your brief, then agree the analytical and formulation acceptance criteria with your quality team. A product guide is reference information; request the actual lot COA before approval.
Continue with a practical check
Botanical Marker Assay vs Extract Ratio — A 10:1 extract ratio and a named-marker percentage answer different questions; compare identity and analytical basis before choosing a botanical ingredient.
Continue with a practical check
COA vs SDS vs TDS for Cosmetic Raw Materials — Use the right document for the decision: batch acceptance, handling hazards and formulation guidance require different evidence.
Continue with a practical check
Cosmetic Ingredient Solubility and Dispersion Testing — Screen dissolution, dispersion and hydration separately so a promising-looking sample does not hide sediment, incomplete hydration or an unsuitable vehicle.
Continue with a practical check
Cosmetic Ingredient Storage and Stability Checks — Separate raw-material storage instructions from finished-formula shelf-life evidence, and control exposure during both sampling and production.
Continue with a practical check
Cosmetic Raw Material Sample Evaluation and Quotation — Compare samples and quotations on the same grade, composition and acceptance criteria before deciding which offer has the lower usable cost.