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Polyol intermediate

TRIMETHYLOLPROPANE

CAS 77-99-6
55

Safety score · 0–100

Moderate

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

Trimethylolpropane is an industrial polyol used mainly to build cosmetic polymers and esters, rarely appearing as a free ingredient. As a raw material it can irritate skin and eyes, so direct use is uncommon.

Skin benefits

  • Functions primarily as a chemical building block for esters and polymers
  • Rarely present in finished products as the free chemical
  • Low acute oral toxicity in animal studies
  • Improves flexibility and stability of polymer ingredients it helps build

Known concerns

  • Reported skin and eye irritation potential in concentrated form
  • Industrial-grade raw material rather than a consumer cosmetic active
  • Limited dedicated cosmetic safety assessment as a stand-alone ingredient
  • Dust exposure can be irritating to respiratory tract during manufacture

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.