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METHOXY PEG-45/POLYEPSILON CAPROLACTONE

78

Safety score · 0–100

Fine

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

About

A large polymer block that works as an emollient and skin-conditioning agent — creates a smooth, lightweight feel on skin.

Methoxy PEG-45/Polyepsilon Caprolactone is a block copolymer consisting of a methoxy-terminated polyethylene glycol (PEG) chain of approximately 45 ethylene oxide units linked to a polyepsilon caprolactone polyester block of approximately 38 repeating units. The PEG block provides hydrophilicity and moisture-binding properties while the PCL block contributes lipophilicity and emolliency. This amphiphilic structure makes it effective at the skin lipid interface. The high molecular weight of this copolymer means it does not penetrate deep into skin and is not readily absorbed systemically. Generally regarded as safe in cosmetic use, though very high molecular weight polymers are sometimes contaminated with residual monomers.

Skin benefits

  • Emollient and skin-softening
  • Improves product texture and spreadability
  • Lightweight moisturizing 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 — always read the physical product label and consult a healthcare professional for personal concerns.