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Antioxidant

THIODIPROPIONIC ACID

CAS 111-17-1 Updated
80

Safety score · 0–100

Good

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

About

A sulfur-bridged dicarboxylic acid used as an antioxidant for oils and polymers and as a mild conditioning agent. FDA-cleared as a food antioxidant; well-tolerated at cosmetic levels.

Function

SKIN CONDITIONING

Skin benefits

  • Antioxidant via thioether sulphur
  • Stabilizer for oil/polymer phases
  • Skin conditioning at low levels

Known concerns

  • Mild eye/skin irritant at high concentrations
  • Limited dedicated cosmetic dossier

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.