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Sodium 3-(allyloxy)-2-hydroxypropanesulphonate

CAS 52556-42-0
60

Safety score · 0–100

Fine

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

An allyl-ether hydroxypropane sulfonate sodium salt — usually a reactive monomer for cosmetic copolymers rather than a leave-on active. Free residual allyl can mildly irritate, so use is limited.

Skin benefits

  • Reactive sulfonate building block
  • Polymer-grade hydrotrope
  • Improves formula stability

Known concerns

  • Allyl group can be reactive/irritant if unreacted
  • Mainly used as polymer monomer not finished cosmetic

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.