Prebiotic/Probiotic/Postbiotic

Lactobacillus … Filtrate

INCI: LACTOBACILLUS/CENTELLA ASIATICA EXTRACT/POLYSORBATE 80 FERMENT LYSATE FILTRATE

Reviewed by Rosie · Last updated 2 Jun 2026

A fermented blend combining probiotics and centella for skin conditioning

Best For Skin Types

All, Sensitive, Combination

Addresses

Sensitivity, Redness, Barrier repair

Usage Frequency

Daily

What Is Lactobacillus … Filtrate?

This ingredient is a fermented lysate—a liquid extract created by fermenting Lactobacillus (beneficial bacteria) together with Centella Asiatica (an Asian plant traditionally used in skincare) and Polysorbate 80 (an emulsifying agent). The fermentation process breaks down the plant material and produces metabolites from the bacterial culture, creating a filtrate that is added to skincare products.

The resulting ingredient functions primarily as a skin conditioner, intended to support the skin's texture and overall condition. It combines the potential benefits of probiotics (which may help support skin microbiota) with centella, which has been used for centuries in traditional medicine for wound healing and skin resilience.

How It Works

Lactobacillus fermentation produces metabolites—compounds created during the bacterial fermentation process—which may interact with skin cells and the skin microbiome. These metabolites, combined with bioactive compounds from centella asiatica, are thought to help reinforce the skin's natural moisture barrier and reduce irritation.

The fermentation process itself can enhance the bioavailability of plant compounds, potentially making them more accessible to the skin. However, the precise mechanisms remain not fully characterised, and individual results may vary depending on formulation and concentration.

Clinical Evidence & References

Research specifically on this fermented complex is limited. However, individual components have supporting evidence: centella asiatica has been studied for its wound-healing and anti-inflammatory properties, whilst probiotic-derived ingredients show promise for supporting skin barrier function and reducing sensitivity.

Most available evidence comes from in vitro studies or small clinical trials on the isolated components rather than this specific fermented combination. Further research would help clarify its efficacy in finished skincare formulations.

How to Use

This ingredient is typically found in serums, toners, and moisturisers at varying concentrations. Apply products containing this ingredient to clean skin as part of your regular routine. As with any new product, introduce it gradually to monitor how your skin responds, particularly if you have reactive skin.

Safety & Precautions

Generally well-tolerated in cosmetic formulations. Those with severe probiotic sensitivities or centella allergies should patch test first.

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