Solvent
CYCLOPENTASILOXANE
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A volatile silicone (D5) — gives the silky, dry-feel finish in many makeup primers and serums. EU has restricted it in rinse-off products due to environmental persistence.
Skin benefits
- Silky non-greasy feel
- Quick drying carrier
- Better spread
Known concerns
- EU REACH PBT/vPvB classification
- Rinse-off restricted
- Bioaccumulative
- Spray inhalation caution
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
PubChem
U.S. NIH compound data, GHS hazard codes and toxicity literature.
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.