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Surfactant

POTASSIUM ISOSTEARETH-2 PHOSPHATE

78

Safety score · 0–100

Fine

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

A mild anionic phosphate surfactant from isostearic acid — gentle cleanser and emulsifier in face washes and body cleansers. Lower-irritation profile than sulfate surfactants; trace dioxane is the main caveat.

Function

SURFACTANT - CLEANSING

Skin benefits

  • Mild anionic surfactant for cleansing
  • Good emulsifying properties
  • Compatible with sensitive skin formulations
  • Provides effective foam in cleansers

Known concerns

  • Ethoxylation-derived 1,4-dioxane trace impurity concern
  • Phosphate environmental load consideration

References

EU

EU CosIng database

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

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Surfactant

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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.