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Surfactant

POTASSIUM LAURYL SULFATE

CAS 4706-78-9 Updated
50

Safety score · 0–100

Moderate

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

About

A potassium-salt cousin of SLS — strong cleansing and lather but irritating and drying at high levels. Fine in well-rinsed products; avoid in sensitive leave-ons.

Function

SURFACTANT - EMULSIFYINGSURFACTANT - CLEANSING

Skin benefits

  • Strong cleansing and foaming
  • Effective in shampoos and body washes

Known concerns

  • Skin and eye irritant at higher concentrations
  • Defats and dries skin
  • Not recommended for very sensitive skin
  • Comparable to SLS in irritation

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.