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Astringent

Aluminium hydroxide sulphate

CAS 1332-73-6; 21645-51-2; 8011-94-7 Updated
55

Safety score · 0–100

Moderate

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

About

An aluminium-based astringent and antiperspirant active. Generally well tolerated, but ongoing debate around aluminium absorption keeps it in cautious orange territory.

Skin benefits

  • Astringent
  • Antiperspirant active
  • Pigment substrate

Known concerns

  • Aluminium absorption questions
  • Possible irritation on broken skin
  • Antiperspirant aluminium debate

References

EU

EU CosIng database

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

Related astringents

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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.