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Leuconostoc/Radish Root Ferment Filtrate

Cleaner choiceReviewed September 30, 2026

Radish Root Ferment Filtrate · Leuconostoc Ferment Filtrate · Radish Root Ferment

Radish root fermented with Leuconostoc bacteria. The ferment produces antimicrobial peptides, which is what does the preserving.

What it does

Preservation

Our take

A preservative that comes from a food ferment rather than a lab, and one of the few that genuinely holds a formula on its own terms. We use it in pore magic because a toner sits on skin all day and we wanted the mildest system that would still keep the bottle safe. No parabens, no formaldehyde releasers, no isothiazolinones, and it is well tolerated on sensitive skin.

Suitable from

Tween, 8+ · Teen, 13+ · Young adult, 20+ · Middle aged, 40+

Best for

Redness & sensitivity

Skin types

Any skin · Sensitive · Blemish-prone

Can it clog pores

Low risk. It is not on the acne clinics' pore-clogging lists. This flag is for the face only, it does not apply to body, hair or home care.