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Fragrance

2,4-Dihydroxy-3-methylbenzaldehyde, when used as a fragrance ingredient

CAS 6248-20-0 Updated
45

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A hydroxylated benzaldehyde used for sweet vanilla-balsam notes — the aldehyde plus ortho-dihydroxyl pattern make it both a sensitiser and a pro-oxidant. IFRA and EU treat it as a restricted fragrance allergen.

Skin benefits

  • Provides a sweet vanilla-balsamic fragrance note

Known concerns

  • Hydroxyaldehyde — skin sensitiser
  • Catechol-like ortho-dihydroxy motif raises oxidative stress concern
  • EU Annex III declarable allergen
  • IFRA Standard restriction

References

EU

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.