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Surfactant

C13-15 ALKETH-21 (FORMERLY C13-15 PARETH-21)

CAS 64425-86-1 (generic)
83

Safety score · 0–100

Good

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

A C13-15 fatty alcohol with 21 EO units — high water solubility makes it good at solubilizing fragrances and oils into clear formulas. CIR-cleared alkyl-ether family; manufacturer-controlled 1,4-dioxane is the routine flag.

Function

SURFACTANT - CLEANSINGSURFACTANT - SOLUBILIZING

Skin benefits

  • Highly water-soluble solubilizer
  • Effective for fragrance solubilization
  • Mild O/W emulsifier
  • Stable across pH

Known concerns

  • Trace 1,4-dioxane requires supplier control
  • Can foam excessively in some formats

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, so always read the physical product label and consult a healthcare professional for personal concerns.