Caredermis

1-Naphthol

Severity 6/10

hair dyeing

Is 1-Naphthol safe?

1-Naphthol carries moderate concerns worth knowing about (allergy risk, irritation).

Documented concerns

Each concern below is drawn from official data — see the cited sources ↓

Allergy risk

6/10

Classified by EU CosIng Annex III (declarable / restricted).

Irritation

6/10

Classified by EU CLP Skin Irrit. 2; EU CLP Eye Dam. 1.

Official regulatory status

Pulled directly from official regulatory datasets and expert reviews — not our own judgement.

CIR: reviewed safeEU cosmetics: Restricted

Sources

Each authority below is shown only because our ingested copy of its data lists 1-Naphthol — not because we asserted it. Follow a link to verify the classification or regulation directly.

CIR conclusion from the Cosmetic Ingredient Review (CIR) Quick Reference Table — cir-safety.org (snapshot in data/sources/)(point-in-time snapshot; CIR's live record may have been updated since).

See our methodology for how these map to concern levels. Informational only — not medical advice.

Products in our library containing 1-Naphthol

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