Fragrance
METHYLCINNAMYL ALCOHOL
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A methylated cinnamyl alcohol — in the EU Annex III declarable fragrance allergen class. Use with use-level awareness; disclosed on EU labels.
Methylcinnamyl alcohol (CAS 1504-55-8) is a methylated variant of cinnamyl alcohol, used for balsamic, floral, sweet fragrance notes. Cinnamyl alcohol is one of the 26 EU-designated fragrance allergens that must be declared on cosmetic labels above threshold concentrations (0.001% leave-on; 0.01% rinse-off). Methyl substitution does not eliminate the class sensitization concern, and the structure can oxidize to more reactive cinnamaldehyde-type species. RIFM/IFRA restrict cinnamyl-family materials to low leave-on percentages. The score is lowered from a prior green because the cinnamyl allergen-class signal is well established.
Function
Skin benefits
- Balsamic-floral fragrance note
- Cinnamyl class
Known concerns
- EU Annex III fragrance allergen class (cinnamyl alcohol family)
- Skin sensitization potential
- Oxidation to reactive species
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.