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Surfactant

SODIUM HYDROXYSTEARATE

CAS 13329-67-4 Updated
85

Safety score · 0–100

Good

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

About

Sodium salt of hydroxystearic acid used as a soap-type cleanser, typically derived from castor oil. Long-established safe-as-used profile; mild on skin at typical formulation levels.

Function

CLEANSINGSURFACTANT - CLEANSING

Skin benefits

  • Mild cleansing surfactant
  • Castor-oil derived natural origin
  • Hydroxyl group adds substantivity
  • Stable in aqueous-alkaline systems

Known concerns

  • No significant concerns at cosmetic concentrations
  • High concentrations may dry skin in rinse-off

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.