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Antioxidant

5-HYDROXYVANILLIN

CAS 3934-87-0
55

Safety score · 0–100

Moderate

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

A vanillin derivative (3,4-dihydroxy-5-methoxybenzaldehyde) used for fragrance and antioxidant action. Carries GHS skin and eye irritation flags, so use levels are limited.

Function

HAIR DYEING

Skin benefits

  • Antioxidant phenolic aldehyde
  • Fragrance / flavor note
  • Possible mild brightening

Known concerns

  • GHS H315 causes skin irritation
  • GHS H319 causes serious eye irritation
  • H335 may cause respiratory irritation

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, so always read the physical product label and consult a healthcare professional for personal concerns.