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Ingredient guide
Lactobacillus Crispatus Ferment Filtrate
In short
A ferment filtrate from Lactobacillus crispatus known for lactic acid and gentle antimicrobial metabolites. It can help support a balanced surface environment and maintain comfortable pH. Research is still limited for facial skincare.
Reviewed against published evidence · editorially independent · no brand pays for placement
Works for
Barrier · Redness
Skin type
Sensitive
Best used
Anytime
What it is
Ferment filtrate of Lactobacillus crispatus (genus unchanged in 2020 reclassification); dominant vaginal Lactobacillus with strong lactic acid and hydrogen peroxide production inhibiting pathogen growth; topical filtrate explored for intimate-hygiene and microbiome-protective skin formulations; lactic acid and bacteriocin fraction support gentle antimicrobial and pH-regulating activity.
Also found as
Related
Common questions
It helps maintain a balanced skin surface and can offer mild pH‑supporting benefits.
It’s generally considered gentle and can suit sensitive skin, especially in microbiome‑focused products.
It appears in intimate‑care products and emerging microbiome‑supporting skincare.
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Personal guidance only · For clinical concerns, see a dermatologist.