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Colorant

ALUMINUM

CAS 7429-90-5
55

Safety score · 0–100

Moderate

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

Aluminum metal — used as a powder colorant (CI 77000) and, in compound forms, as antiperspirant. EU recently tightened limits over systemic-exposure concerns. Cancer and Alzheimer's links remain unproven but unresolved.

Skin benefits

  • Imparts metallic sheen and opacity as colorant (CI 77000)
  • Provides slip and adhesion in pressed powders
  • Functions as antiperspirant active in some forms
  • Long manufacturing track record

Known concerns

  • EU 2023 caps for antiperspirant use after systemic exposure reassessment
  • Theoretical Alzheimer's/breast-cancer signals remain unproven but persistent
  • Heavy-metal accumulation potential if dermal barrier is impaired
  • Inhalation hazard in loose-powder applications

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, so always read the physical product label and consult a healthcare professional for personal concerns.