Other
ISOPENTENONE BUTYLENEGLYCOL CYCLIC ACETAL
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A cyclic acetal fragrance material that releases isopentenone over time, used to add fresh, citrus-green notes to perfumes and body care products.
This butyleneglycol acetal of isopentenone serves as a controlled-fragrance delivery system in cosmetics. Its cyclic acetal structure acts as a pro-fragrance that hydrolyses slowly to release the active ketone. The EU Cosmetics Regulation classifies it among fragrance precursor materials that may require allergen labelling. Limited repeated-dose toxicity data mean it is treated with precaution in leave-on applications.
Skin benefits
- Provides long-lasting fresh citrus-green fragrance character
Known concerns
- Limited long-term toxicity data
- Fragrance allergen precursor with hydrolysis-release mechanism
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related others
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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.