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Diaminophenols (1)

35

Safety score · 0–100

Caution

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Diaminophenols (1) is a cosmetic ingredient used in product formulation. Exercise caution due to limited available safety data.

Diaminophenols (Entry 1) are aromatic diamine compounds used primarily as oxidative hair dye intermediates. They are listed in EU Annex III (Regulation 1223/2009) with a maximum concentration limit of 10% (as free base) when used in oxidative hair dye formulations. The restriction is intended to limit exposure during the colouring process. Aromatic diamines are known sensitisers and the SCCS has repeatedly called for minimisation of consumer exposure. They must be used only in the context of oxidative hair dyeing processes where they are mixed with hydrogen peroxide immediately before use.

Known concerns

  • Skin sensitisation (known allergen)
  • EU Annex III restricted (max 10% as free base)
  • Must be used only in oxidative hair dye systems
  • Potential for cross-reactivity with other aromatic amines

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.