Fragrance
ISONONYL ALCOHOL
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A branched C9 alcohol — used as a low-percentage fragrance with normal IFRA controls.
Isononyl alcohol is a branched nine-carbon aliphatic alcohol produced in petrochemical/oxo processes. In cosmetics it appears primarily as a fragrance ingredient with fresh, green-floral notes, used at low percentages in fine fragrance. Branched C9 alcohols have moderate industrial-chemicals toxicology dossiers, and IFRA/RIFM govern maximum use concentrations in fragrance applications. It is not a notable sensitizer at normal fragrance levels; primary concerns are mild local irritation at higher percentages and typical fragrance-allergy considerations.
Function
Skin benefits
- Contributes fresh floral fragrance notes
- Used at low % in perfumery
- Can serve as a low-molecular-weight solvent
Known concerns
- Lower-MW alcohols can mildly irritate at higher %
- Mostly industrial-chemicals toxicology background
- IFRA-regulated use levels
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related fragrances
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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.