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LEUCONOSTOC

82

Safety score · 0–100

Good

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

About

A beneficial bacteria used as a natural preservative and probiotic — helps keep products fresh and supports your skin's microbial balance.

Leuconostoc refers to one or more species of the lactic acid bacterium genus Leuconostoc. In cosmetics, fermentation products from Leuconostoc species function as natural antimicrobial preservatives and probiotic skin-conditioning agents. Leuconostoc/Radish Root Ferment Filtrate is a particularly common derivative that provides broad-spectrum antimicrobial activity as a natural alternative to synthetic preservatives. The bacteriocins and organic acids produced during fermentation inhibit growth of pathogenic microorganisms while supporting beneficial skin microbiome. Generally recognized as safe with a long history in food fermentation.

Skin benefits

  • Natural antimicrobial preservation
  • Supports healthy skin microbiome
  • Probiotic skin-conditioning benefits
  • Clean beauty alternative to synthetic preservatives

Known concerns

  • Efficacy as sole preservative may be insufficient for all product types
  • Rare allergic reactions possible
  • Quality depends on fermentation standardization

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.