What it is
Leuconostoc/Radish Root Ferment Filtrate is produced by fermenting radish root with the lactic-acid bacterium Leuconostoc kimchii, yielding a filtrate that contains an antimicrobial peptide. It is widely used in natural and clean-positioned formulas as an alternative to conventional preservatives and also contributes skin-conditioning effects. It is a common choice in Korean and natural-brand sunscreens aiming for shorter ingredient lists.
Safety & warnings
This ferment filtrate is generally well tolerated and is used in natural and sensitive-skin formulas, with no widely recognized allergenicity or comedogenicity concerns at typical levels. As a peptide-based system its antimicrobial efficacy depends on formulation, but from a skin-tolerability standpoint reactions are uncommon.
Origin & sourcing
Natural-derived via fermentation; the filtrate is obtained by culturing Leuconostoc bacteria on radish root and then filtering the medium.
History
It was developed and commercialized as a fermentation-based, naturally positioned preservative system as demand grew for alternatives to traditional cosmetic preservatives.
Questions everyone asks
What is radish root ferment filtrate?
It is a fermentation filtrate made by culturing Leuconostoc bacteria on radish root, used for skin conditioning and as a natural-positioned preservative.
Is it a preservative?
It can act as an alternative preservative because it contains an antimicrobial peptide, though efficacy depends on the overall formulation.