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STEARETH-15

CAS 9005-00-9 (Generic)
82

Safety score · 0–100

Good

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

Steareth-15 is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Steareth-15 is the polyethylene glycol 15-mole ether of stearyl alcohol (n-octadecanol). Listed in CosIng with emulsifying and surfactant functions and no EU Annex restrictions. The Steareth series is among the most widely used emulsifiers in cosmetic science, particularly in o/w emulsions where Steareth-2/Steareth-20 combinations are classic systems. CIR has assessed Steareth compounds as safe for cosmetic use. 1,4-dioxane is the primary impurity of concern, controlled under EU GMP. Steareth-15 at typical use levels (1-5%) does not typically cause skin irritation in the general population.

Skin benefits

  • Versatile emulsifier for o/w cosmetic emulsions
  • Provides smooth, elegant skin feel
  • Stable across a wide pH range

Known concerns

  • 1,4-dioxane trace impurity from ethoxylation
  • Mild eye irritation potential
  • May enhance penetration of other ingredients through the skin barrier

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.