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Colorant

ACID YELLOW 23

CAS 1934-21-0 Updated
58

Safety score · 0–100

Moderate

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

About

Tartrazine (Acid Yellow 23 / CI 19140) — EU-permitted cosmetic colorant for non-eye-area products. Bright and stable but documented for contact urticaria and aspirin cross-reactivity.

Function

HAIR DYEING

Skin benefits

  • EU-permitted cosmetic colorant (CI 19140)
  • Bright stable yellow
  • Approved for non-eye-area cosmetics

Known concerns

  • Documented contact urticaria and pseudo-allergy
  • Cross-reactivity in aspirin-sensitive users
  • Restricted from eye-area cosmetics in EU

References

EU

EU CosIng database

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

Related colorants

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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.