Lactobacillus/Leaf Ferment Filtrate

Lactobacillus/Leaf Ferment Filtrate is a liquid ingredient produced by fermenting plant material using beneficial Lactobacillus bacteria. During fermentation, the bacteria break down plant compounds into smaller molecular fragments, creating a filtrate (strained liquid) that retains bioactive compounds from the original plant. This process can enhance the availability and stability of certain plant-derived components.In skincare formulations, this ingredient functions primarily as a skin conditioner and protectant, helping to maintain skin hydration and support the skin's natural defences.

The fermentation process converts plant compounds into smaller molecules that are easier for the skin to absorb and utilise. These fermented components can form a protective layer on the skin surface, reducing transepidermal water loss and helping to maintain hydration.The specific bioactive compounds present depend on which plant material is fermented, but fermented extracts generally work by conditioning the outer layers of skin and supporting its natural barrier function.

This ingredient is typically found in toners, essences, serums and moisturisers. It can be used daily as part of a regular skincare routine. Since fermented extracts are generally well-tolerated, they can be layered with most other skincare ingredients, though patch testing is sensible if you have particularly reactive skin.

Lactobacillus/Leaf Ferment Filtrate is generally well-tolerated and considered safe for topical use. Those with sensitivity to fermented ingredients or specific plant sources should patch test first.