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Strontium acetate hemihydrate

CAS 543-94-2
40

Safety score · 0–100

Moderate

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

About

Strontium Acetate Hemihydrate is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.

Strontium acetate hemihydrate (CAS 543-94-2) is regulated under EU cosmetic law with a maximum permitted concentration of 3.5% calculated as strontium. When combined with other permitted strontium compounds, the total strontium content must not exceed this limit. CosIng references this restriction under the general metal acetate guidelines. Strontium has been associated with skin irritation in sensitive individuals, and long-term deposition in bone is a theoretical concern, contributing to a moderate-to-low safety score.

Skin benefits

  • Used in some depilatory formulations
  • Provides anti-cavity benefits in oral care at regulated levels

Known concerns

  • EU restriction to 3.5% maximum (as strontium)
  • Total strontium content must not exceed 3.5% when combined with other strontium sources
  • Skin irritation reported in sensitive individuals
  • Theoretical bone deposition concern

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.