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Skin Conditioning

RHIZOPUS/SACCHAROMYCES/RICE FERMENT

72

Safety score · 0–100

Fine

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

About

A rice ferment by Rhizopus mold and Saccharomyces yeast — similar chemistry to traditional koji/sake-style ferments. Mild and conditioning.

This ingredient is the product of co-fermenting rice with Rhizopus (a mold used in tempeh, makgeolli, and tape) and Saccharomyces yeast. The resulting filtrate contains amino acids, oligopeptides, organic acids, and small sugars that contribute mild humectant and skin-conditioning effects. Related ferments (sake kasu, rice-bran ferment) have a long traditional skincare record in East Asia. Mold-fermented ingredients can carry allergenic protein residues, so reputable suppliers control strain identity, sterility, and downstream filtration. No CIR-specific review; safety is generally inferred from related ferments.

Function

SKIN CONDITIONING - EMOLLIENT, SKIN CONDITIONING

Skin benefits

  • Provides amino acids and humectants
  • Mild barrier-conditioning effect
  • Soft skin feel

Known concerns

  • Possible mold-derived allergens
  • Composition varies by supplier
  • Limited standardized clinical data

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.