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PEG-3 DIISOSTEARATE

78

Safety score · 0–100

Fine

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

An emulsifying ester with three ethylene oxide units — balances oil and water phases nicely and leaves skin feeling conditioned and smooth.

PEG-3 diisostearate is formed by esterifying polyethylene glycol-3 with two isostearic acid molecules. The medium-length PEG chain (3 EO) provides amphiphilic properties suitable for use as an emulsifier or co-emulsifier in O/W emulsions. Isostearic acid's branched structure imparts low pour point and a distinctive velvety skin feel. No regulatory restrictions apply to this ingredient in cosmetic formulations.

Skin benefits

  • Conditions and softens skin
  • Emulsifies formulations
  • Provides smooth application feel

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.