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Antioxidant

ERYTHORBIC ACID

CAS 89-65-6
80

Safety score · 0–100

Good

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

A stereoisomer of vitamin C used as an antioxidant to keep formulas from oxidizing. Food-grade safety profile; less active on skin than L-ascorbic acid but very gentle.

Function

ANTIOXIDANT

Skin benefits

  • Antioxidant — protects oils and actives
  • Vitamin C stereoisomer (D-isoascorbic acid)
  • Food-grade safety record
  • Stabilizes formulations

Known concerns

  • Less skin bioactivity than L-ascorbic acid
  • Mild irritation at very high concentrations

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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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.