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PPG-25-PEG-25 TRIMETHYLOLPROPANE

82

Safety score · 0–100

Good

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

About

A balanced PEG/PPG polyether of trimethylolpropane with equal propoxylation and ethoxylation; used as a skin-conditioning humectant with good formulation compatibility.

PPG-25-PEG-25 Trimethylolpropane is a symmetrically propoxylated and ethoxylated trimethylolpropane derivative listed on EU CosIng as a skin-conditioning agent and humectant. The equal 25 EO/25 PO ratio provides balanced solubility in both aqueous and oily phases. The C4 core (trimethylolpropane) is metabolically inert. High molecular weight limits systemic absorption. It is not subject to EU Annex II or III restrictions, though standard 1,4-dioxane impurity controls apply.

Skin benefits

  • Effective humectant and skin conditioner
  • Good compatibility with a wide range of cosmetic ingredients
  • Provides smooth, non-greasy skin feel

Known concerns

  • Trace 1,4-dioxane from ethoxylation must be below 10 ppm
  • Generally well tolerated; no specific EU restrictions
  • High molecular weight results in negligible skin penetration

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.