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Emulsifier

STEARETH-4

CAS 9005-00-9 (Generic) / 59970-10-4
75

Safety score · 0–100

Fine

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

A polyethylene-glycol ether of stearyl alcohol (4 moles EO) — a workhorse O/W emulsifier in creams and lotions. CIR-supported as safe; the standard PEG-residue concerns about 1,4-dioxane apply.

Skin benefits

  • Reliable O/W emulsifier
  • Helps stabilize creams and lotions
  • Improves product spreadability

Known concerns

  • Ethoxylated material — potential trace 1,4-dioxane contamination
  • CIR-supported as safe but requires manufacturer purity controls

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.