Lactobacillus/Radish Root Ferment Filtrate

Lactobacillus/Radish Root Ferment Filtrate is a preservative ingredient derived from the fermentation of radish root using Lactobacillus bacteria. During fermentation, the bacteria produce organic compounds that have antimicrobial properties, which are then filtered to create a liquid preservative system.This ingredient functions as a natural alternative to synthetic preservatives, working to prevent microbial growth and extend the shelf life of skincare formulations. It is often used as part of a broader preservation strategy in products designed to appeal to consumers seeking naturally de…

During fermentation, Lactobacillus bacteria metabolise radish root components and produce antimicrobial compounds such as lactic acid and other organic acids. These metabolites create an environment that inhibits the growth of unwanted bacteria, yeasts and moulds—the microorganisms responsible for product degradation and spoilage.When included in a skincare formulation, this ferment filtrate works continuously to prevent microbial proliferation, allowing the product to remain safe and effective without requiring high concentrations of synthetic preservatives.

This ingredient works as a preservative system within the finished product rather than something you apply separately. It is most effective when used as part of a multi-functional preservation strategy, sometimes combined with other naturally derived or synthetic preservatives to optimise stability. Check your product's storage instructions—keeping skincare in a cool place away from direct sunlight helps preserve the formulation's integrity alongside the preservative system.

Generally well-tolerated with low sensitisation potential. Individuals with sensitivity to fermented ingredients or lactic acid should patch test first, though reactions are uncommon.