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Surfactant

PEG-9 STEARAMIDE CARBOXYLIC ACID

CAS 90453-59-1
65

Safety score · 0–100

Fine

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

A PEG-9 stearamide with a terminal carboxylic acid handle. Acts as an emulsifying surfactant in cleansers and creams; ethoxylated chemistry means residual 1,4-dioxane is the supplier-quality lever.

Function

SURFACTANT - EMULSIFYING

Skin benefits

  • Co-emulsifier with mild surfactant action
  • Stabilises oil-in-water systems
  • Compatible with anionic and amphoteric blends

Known concerns

  • Trace 1,4-dioxane possible if not vacuum-stripped
  • Ethoxylated chemistry, EU/Cal-Prop65 considerations
  • Avoid use on 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.