Ingredient guide
L. Reuteri Ferment Filtrate
Limosilactobacillus Reuteri Ferment Filtrate
In short
A ferment filtrate from Limosilactobacillus reuteri known for its soothing and microbiome‑supportive properties. It can help reduce visible redness and support a balanced barrier.
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What it is
Ferment filtrate of Limosilactobacillus reuteri (formerly Lactobacillus reuteri, reclassified 2020 IJSEM); reuterin and reutericin bacteriocins from this strain have demonstrated antimicrobial activity toward C. acnes and dysbiotic skin microorganisms; metabolites modulate TLR2 innate immune signalling toward anti-inflammatory tone; this new genus INCI introduced following the major 2020-2021 Lactobacillaceae reclassification.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- L. Reuteri Ferment Filtrate
- Moisturise
- SPF
Also found as
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Where to find it
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Search the Lens for l. reuteri ferment filtrateCommon questions
What does L. reuteri ferment filtrate do for skin?
It offers calming benefits and supports a more balanced skin environment through its postbiotic metabolites.
Who is this ferment best for?
It suits sensitive or easily flushed skin, and can also help oily skin that benefits from microbiome‑supportive care.
How is it used in skincare?
It is added to essences, serums, and moisturisers to provide soothing and barrier‑supportive effects.
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Personal guidance, not medical advice.