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pH Adjuster

ZINC HYDROXIDE

CAS 20427-58-1 Updated
72

Safety score · 0–100

Fine

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

About

Zinc hydroxide, an inorganic zinc compound used to adjust pH and as a mild skin protectant. Concentrate is alkaline and irritating; finished products are well tolerated.

Function

ABSORBENT

Skin benefits

  • Inorganic zinc compound — buffering/pH-adjusting use
  • Mild astringent and skin protectant
  • Source of soluble zinc in formulations

Known concerns

  • Alkaline raw material — irritant in concentrate
  • Aquatic toxicity concerns in environment
  • Dust inhalation risk in raw handling

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.