05 / Antioxidant defense
Ergothioneine
A cosmetic active for formulas centered on antioxidant care, environmental-stress positioning and visible skin vitality.
Conceptual efficacy visualINCI nameErgothioneine
CAS number497-30-3
Ingredient classAntioxidant amino-acid derivative
Intended useTopical cosmetic formulation
Indicative EXW pricing
Pack prices in USD.
Supplier-recommended reference for Ergothioneine. Select a standard pack to start an order through WhatsApp.
Conversion basis: CNY 8,000/kg at 1 USD = CNY 6.7807 on September 3, 2026. Prices are non-binding EXW China references and exclude freight, insurance, duties, taxes and destination charges. No online payment is collected; every order is confirmed through WhatsApp before payment.
What is Ergothioneine?
A direct answer for formulators and buyers.
Ergothioneine is the INCI and common ingredient name. Current supplier documents identify Tender's offered material as L-(+)-Ergothioneine with (S)-configuration, a sulfur-containing amino-acid derivative used in topical cosmetic antioxidant and skin-conditioning concepts. The exact commercial batch must still be confirmed against the current controlled specification and batch COA.
Quick reference
Start with identity, form and scope.
- INCI
- Ergothioneine
- CAS
- 497-30-3
- Declared grade identity
- Current supplier documents identify the offered material as L-(+)-Ergothioneine with (S)-configuration. Confirm the commercial batch against a controlled specification and current stereochemical test result.
- Current material view
- White to off-white crystalline powder in current technical documents; the image is a representative AI-created visual, not a batch photograph.
- Common search terms
- L-Ergothioneine · L-(+)-Ergothioneine · Ergothioneine cosmetic ingredient · Ergothioneine powder · CAS 497-30-3 · antioxidant skincare active
- Commercial path
- Sample, documents and RFQ subject to grade and destination review.
Material proof
See the ingredient.
Then review the batch.
This AI-created image represents the white to off-white crystalline powder described in current technical documents. It is not a photograph of the commercial batch; identity, purity, appearance and conformity must be confirmed against the applicable specification and batch COA.
Physical appearanceBatch COA by requestPackaging confirmed by inquiry
Ingredient visual story
Function and formulation,
shown with context.
Conceptual imagery supports discovery; the raw-material photograph and technical documents support product review.
Application fit
01Antioxidant skincare
02Environmental-stress care
03Radiance concepts
04Well-aging facial care
Format inspiration
01Facial serums
02Creams and lotions
03Masks
04Eye-area care
Formulation review
Questions to resolve before pilot work.
Available supplier product literature lists a preliminary suggested use range of 0.1–3%; do not treat this as a controlled TDS or universal regulatory limit. Confirm the current grade-specific TDS, active basis and destination-market assessment before formulation.
Confirm solubility, pH window, process temperature, addition stage, light protection and storage conditions for the offered batch.
Support antioxidant, radiance or well-aging wording with evidence relevant to the exact grade and finished formula; do not transfer food or medical claims to a cosmetic product.
Procurement checklist
Five points to align in the RFQ.
- 01INCI, CAS and declared L-(+) identity
- 02HPLC purity, assay and stereochemical test basis
- 03Fermentation origin and impurity controls
- 04Current specification, TDS, SDS and batch COA
- 05Destination-market and logistics review
Documentation path
Review the identity.
Then review the batch.
Request the document set relevant to your market, project stage and target quantity.
SpecificationTDSSDSCOAStorage guidancePackaging details
Formulator FAQ
Questions about Ergothioneine
What is Ergothioneine in cosmetic formulation?
Ergothioneine is a sulfur-containing amino-acid derivative used in topical products positioned around antioxidant care, environmental-stress support, radiance and visible skin vitality.
Is Ergothioneine a peptide?
No. Ergothioneine is not a peptide; it is a sulfur-containing amino-acid derivative that occurs in nature. Commercial origin and production route must be confirmed for the exact offered grade.
What is the difference between Ergothioneine and L-Ergothioneine?
Ergothioneine is the INCI and common ingredient name, while L-(+)-Ergothioneine specifies the stereochemical form. Current supplier documents declare the offered material as L-(+) with (S)-configuration. That declaration should be verified for the commercial batch by a controlled specification and a current COA reporting specific rotation or another suitable stereochemical method.
What does the current grade look like and is it water soluble?
Current technical documents describe a white to off-white crystal or powder that is soluble in water. Confirm appearance, solubility and conformity against the current specification and batch COA for the offered material.
What use level should formulators evaluate?
Available supplier product literature lists 0.1–3% as a preliminary suggested range. This is not a controlled TDS or universal regulatory limit: use the current grade-specific TDS and complete a safety, compatibility and destination-market review for the finished formula.
Which documents can buyers request?
Request the current specification, TDS, market-appropriate SDS, representative or batch COA, storage guidance, packaging details and any available safety or regulatory support for the exact offered grade.
Product scope: Professional cosmetic raw material for topical formulation only. Not for direct consumer use, injection, ingestion, pharmaceutical compounding or therapeutic use. Third-party trademarks belong to their respective owners; INCI identity does not establish commercial-grade equivalence.
Content reviewed 2026-09-03. Final suitability, use level, claims and regulatory status must be assessed for the exact grade, formula and destination market.Related ingredients
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