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PEG-10 STEARATE

CAS 9004-99-3
80

Safety score · 0–100

Good

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

About

A gentle emulsifier made from stearic acid — helps oil and water blend smoothly in creams and lotions.

PEG-10 Stearate (CAS 9004-99-3) is a polyethylene glycol ester of stearic acid with 10 moles of ethylene oxide. It functions as an emulsifier, surfactant, and skin conditioning agent. It is effective at creating stable oil-in-water emulsions with good skin feel. The CIR Expert Panel has reviewed PEG stearates and found them safe for cosmetic use when formulated to be non-irritating. As with other ethoxylated ingredients, trace 1,4-dioxane contamination from manufacturing is addressed through purification processes. Well-tolerated by most skin types.

Skin benefits

  • Effective emulsification
  • Smooth skin conditioning
  • Mild and well-tolerated

Known concerns

  • Potential trace 1,4-dioxane from ethoxylation
  • May enhance skin penetration of other ingredients

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.