BICYCLOPENTYLYL BUTENOATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A bicyclic cyclopentenyl butenoate ester used as a fragrance ingredient with moderate concentration restrictions in cosmetic formulations.
Bicyclopentenyl butenoate is a cyclopentene-derived ester functioning as a fragrance ingredient with woody, fruity, and slightly floral notes. The source PubChem safety score of 50 indicates some concern, and general precautions for unsaturated esters apply. The bicyclic structure enhances substantivity in fragrance applications, providing longer-lasting odor. It is not individually listed in EU Annexes II or III, but general product safety assessment requirements under Regulation (EC) No 1223/2009 apply to all cosmetic ingredients.
Skin benefits
- Provides long-lasting woody, fruity fragrance notes
Known concerns
- Source PubChem safety score of 50 indicates moderate concern
- Unsaturated ester structure warrants attention to use levels
References
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.