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Antioxidant

ETHYL 3,4-DIHYDROXYBENZOATE

CAS 3943-89-3 Updated
70

Safety score · 0–100

Fine

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

About

An ethyl ester of dihydroxybenzoic acid (catechol-type) used as antioxidant and mild preservative. The catechol structure carries class-level skin-sensitisation potential, so use is typically at low levels.

Function

ANTIMICROBIALANTIOXIDANTSKIN CONDITIONING - MISCELLANEOUS

Skin benefits

  • Antioxidant via catechol moiety
  • Mild antimicrobial activity
  • Acts as preservative booster
  • May reduce hyperpigmentation

Known concerns

  • Catechols can be sensitising for some users
  • Possible mild oxidative discolouration in formula
  • Limited cosmetic clinical literature

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.