Solvent
PPG-4 BUTYL ETHER
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
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 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.