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Humectant

RIBONOLACTONE

CAS 5336-08-3
78

Safety score · 0–100

Fine

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

A naturally-occurring sugar lactone (the cyclic form of ribonic acid). Acts as a mild humectant and antioxidant precursor with no documented hazards at cosmetic concentrations.

Function

HUMECTANT

Skin benefits

  • Sugar-acid lactone with mild humectant action
  • Antioxidant precursor
  • Skin-conditioning

Known concerns

  • Limited cosmetic-specific safety data
  • Lactone hydrolysis to ribonic acid is benign

References

EU

EU CosIng database

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

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ASPERGILLUS FERMENT EXTRACT FILTRATE
Humectant

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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.