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Emulsifier

PEG-5 SORBITAN ISOSTEARATE

CAS 66794-58-9
72

Safety score · 0–100

Fine

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

PEG-5 Sorbitan Isostearate is a nonionic surfactant that blends oil and water phases in cosmetics. It is widely used in lotions and cleansers, with a generally favorable safety record at standard cosmetic use levels.

Skin benefits

  • Effective nonionic emulsifier and solubilizer for oils
  • Improves spreadability and texture of creams and lotions
  • Generally well-tolerated on skin at typical use levels

Known concerns

  • PEG ingredients can contain trace 1,4-dioxane impurities if not properly purified
  • May enhance penetration of other ingredients into compromised skin
  • Mild irritation possible in sensitive or broken skin

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.