# CosIng Checker
> Searchable EU cosmetic ingredient database focused on Annex II-VI restrictions, warnings, identifiers, grouped browsing, and source transparency.

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
Attribution: CosIng Checker (https://cosingchecker.com/)
Data source: European Commission public materials (https://ec.europa.eu/growth/sectors/cosmetics/cosing/)

## Core Pages
- [Homepage](https://cosingchecker.com/): Main entry point for search, annex browsing, and recent updates.
- [Guide](https://cosingchecker.com/guide/): Explains how search, annex pages, identifiers, and record fields work.
- [Sources](https://cosingchecker.com/sources/): Describes source files, import workflow, and coverage.
- [Statistics](https://cosingchecker.com/statistics/): Summarizes dataset counts, field coverage, and grouped totals.
- [Updates](https://cosingchecker.com/updates/): Shows freshness and recent dataset changes.
- [FAQ](https://cosingchecker.com/faq/): Answers common questions about scope and usage.
- [About](https://cosingchecker.com/about/): Explains the purpose and audience of the project.
- [Contact](https://cosingchecker.com/contact/): Contact point for corrections, feedback, and partnerships.

## Key Collections
- [Annexes](https://cosingchecker.com/annex/): Browse Annex II-VI landing pages.
- [Product Types](https://cosingchecker.com/product-types/): Explore grouped ingredient records by product type.
- [Prohibited Substances](https://cosingchecker.com/annex/ii/): Annex II records.
- [Restricted Substances](https://cosingchecker.com/annex/iii/): Annex III records with warnings and conditions.
- [Colorants](https://cosingchecker.com/annex/iv/): Annex IV records.
- [Preservatives](https://cosingchecker.com/annex/v/): Annex V records.
- [UV Filters](https://cosingchecker.com/annex/vi/): Annex VI records.

## Tools
- [INCI Checker](https://cosingchecker.com/checker/): Paste a cosmetic ingredient list to check EU annex matches.
- [Compare Entries](https://cosingchecker.com/compare/): Compare two annex entries side by side.
- [Concentration Calculator](https://cosingchecker.com/concentration-calculator/): Calculate ingredient concentration and check against EU limits.
- [CMR Substances](https://cosingchecker.com/cmr/): Browse all CMR-classified substances across annexes.
- [Fragrance Allergens](https://cosingchecker.com/allergens/): The 26 EU regulated fragrance allergens with CAS numbers and annex links.

## Machine-Friendly Endpoints
- [API](https://cosingchecker.com/api/): Free public REST API for annex entries and ingredient inventory.
- [Sitemap](https://cosingchecker.com/sitemap_index.xml): XML sitemap index for crawl discovery.
- [Search](https://cosingchecker.com/search/): Search form for ingredient names and identifiers.
- [llms-full.txt](https://cosingchecker.com/llms-full.txt): Extended LLM-oriented reference.