Ingredient guide
L. Crispatus Ferment Filtrate
INCI name · 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.
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.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- L. Crispatus Ferment Filtrate
- Moisturise
- SPF
Also found as
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Check an ingredient listCommon questions
What does L. Crispatus Ferment Filtrate do?
It helps maintain a balanced skin surface and can offer mild pH‑supporting benefits.
Is it good for sensitive skin?
It’s generally considered gentle and can suit sensitive skin, especially in microbiome‑focused products.
Where is it used?
It appears in intimate‑care products and emerging microbiome‑supporting skincare.
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Personal guidance, not medical advice.