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Surfactant

SODIUM C16-20 ALKYL SULFATE

CAS 91648-55-4
65

Safety score · 0–100

Fine

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

Sodium C16-20 alkyl sulfate — a longer-chain cousin of SLS. Cleanses well and is somewhat less drying than shorter-chain sulfates; still best in rinse-off, not leave-on, products.

Function

CLEANSINGSURFACTANT - EMULSIFYINGFOAMINGSURFACTANT - CLEANSING

Skin benefits

  • Robust cleansing and emulsification
  • Longer chain — less drying than C12-14 sulfates
  • Stable to hard water

Known concerns

  • Alkyl sulfate class — irritation potential at high use
  • Mild eye sting
  • Can disrupt skin barrier in leave-on

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.