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Solvent

PPG-4 BUTYL ETHER

CAS 9003-13-8
75

Safety score · 0–100

Fine

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

A short-chain propoxylated butyl ether used as a solvent and conditioning agent. Low-toxicity profile but the short PPG block can slightly defat skin at higher use levels in leave-on products.

Function

HAIR CONDITIONINGSKIN CONDITIONING

Skin benefits

  • Lightweight emollient skin feel
  • Hair conditioning and detangling
  • Solvent for fragrance and actives

Known concerns

  • Short PPG chain — slightly more skin-penetrating
  • Possible defatting at high concentrations
  • Trace propylene oxide impurities possible

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

Related solvents

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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.