Ingredient profile
1,2,4-TRIHYDROXYBENZENE
Raters disagreehair dyeingCAS 533-73-3
At least one of our safety lists speaks to this ingredient. Also written as 1,2,4- TRIHYDROXYBENZENE, 1,2,4-Trihydroxybenzene.
Raters don't agree. Here's where each one stands
Safe
Greenlens Precautionary Screen
Independent
Caution
—
Concern
Greenlens Ingredient Scan
Independent
Greenlens Tolerance Screen
Independent
Where each list lands
Funding shown- Concern
Greenlens Ingredient Scan
Independent
Listed in Annex II of the EU Cosmetics Regulation (ref 1642) — prohibited as an ingredient in cosmetic products. (EU Cosmetics Regulation Annex II (prohibited))
- Safe
Greenlens Precautionary Screen
Independent
No listed hazard trait recognized for this ingredient.
- Concern
Greenlens Tolerance Screen
Also screened — not on these lists
- Health Canada Ingredient Hotlist
- California Proposition 65
- US NTP Report on Carcinogens
- IARC Monographs
- ANSES Endocrine Disruptors
- EU Microplastics Restriction
- EU Harmonised Classification (CLP Annex VI)
Where regulators stand
Shown side by side, never combinedEach jurisdiction is reported on its own terms, from its own official lists. Where they disagree, that disagreement is the finding. Absence from a list is never a safety claim.
European Union
BannedProhibited as a cosmetic ingredient in this jurisdiction.
- European Commission · EU Cosmetics Regulation Annex II (prohibited)Listed in Annex II of the EU Cosmetics Regulation (ref 1642) — prohibited as an ingredient in cosmetic products.
Canada
No listing foundNot on the lists we hold for this jurisdiction. That is an absence of a listing, not a safety finding.
Checked: Health Canada Cosmetic Ingredient Hotlist.
California
No listing foundNot on the lists we hold for this jurisdiction. That is an absence of a listing, not a safety finding.
Notes
- EU-prohibited
