# 1,2,4-Benzenetriol

URL: https://app.greenveil.ai/ingredients/ingredient_cas_533_73_3
Categories: beauty, industrial
Functions: Dye
Identifier: 533-73-3

> 1,2,4-Benzenetriol is used as dye. Greenveil chemical-concern score: 100/100 — Critical concern based on regulatory listings.. Assessed from 6 sources.

## Safety assessment

- Chemical concern score: 100/100 — Critical concern based on regulatory listings.
- Confidence: 4
- Rationale: 1,2,4-Trihydroxybenzene when used as a substance in hair and eyelash dye products is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

## Regulatory status

- EU: banned — Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
- US: commercial use observed — EPA CPDat observed this chemical in 9 composition records across product categories including Specialty occupational products, Personal care. EPA CPDat classifies this chemical for functional uses including Dye.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._