Lactobacillus/Pyrus Communis Fruit Ferment Filtrate — INCI reference

What it is

Lactobacillus/Pyrus Communis Fruit Ferment Filtrate is the filtered liquid obtained by fermenting pear (Pyrus communis) fruit or juice with Lactobacillus bacteria. The fermentation process breaks down pear nutrients into smaller bioavailable molecules, including organic acids, enzymes, peptides, and polysaccharides. Studies on lactic acid fermentation of pear juice show it increases total phenolic content and antioxidant capacity while generating novel volatile compounds. In cosmetic formulations, the filtrate functions primarily as a skin-conditioning agent, helping to soften and smooth the skin. Its probiotic-derived metabolites may support the skin's natural microbiome and reinforce the barrier function. The ingredient is found in essences, toners, serums, and masks, often alongside other fermented or probiotic-focused ingredients.

Safety & warnings

No specific safety concerns are established for this ingredient. Lactobacillus ferment filtrates are generally considered gentle and suitable for all skin types, including sensitive and acne-prone skin. Individuals with known pear or fruit allergies should exercise caution. The ingredient does not contain live bacteria; it consists of postbiotic metabolites and filtrate components only.

Origin & sourcing

Derived from the fermentation of Pyrus communis (common pear) fruit or juice by Lactobacillus bacteria. Pyrus communis is native to central and eastern Europe and western Asia, and has been cultivated since antiquity. The fermentation is carried out under controlled conditions; the resulting broth is filtered to remove bacterial cells, yielding the clarified liquid used in cosmetic formulas.

History

Lactobacillus-based ferment filtrates entered cosmetic formulations as part of broader interest in probiotic and postbiotic skincare beginning in the 2000s and 2010s. The specific pear-substrate variant follows the INCI naming convention established for ferment filtrates and is catalogued in the EU CosIng database. No specific regulatory milestones are documented for this individual ingredient beyond standard INCI registration.

Questions everyone asks

What does Lactobacillus/Pyrus Communis Fruit Ferment Filtrate do in skincare?

It primarily functions as a skin-conditioning agent, helping to soften and smooth skin. The probiotic-derived metabolites may also support the skin microbiome and provide antioxidant protection from pear-derived phenolic compounds enhanced by fermentation.

Does this ingredient contain live bacteria?

No. The ingredient is a filtrate — the liquid that remains after fermentation and filtering out the bacterial cells. It contains postbiotic byproducts such as organic acids, enzymes, and peptides, but no live microorganisms.

Is it suitable for sensitive skin?

Lactobacillus ferment filtrates are generally regarded as gentle. However, those with known allergies to pear or related fruits should patch-test before use, as the substrate is pear fruit.

How does fermentation change pear fruit extract?

Lactic acid fermentation increases total phenolic content and antioxidant capacity in pear juice, generates novel volatile compounds, and breaks larger molecules into smaller fragments more readily absorbed by skin, compared to unfermented pear extract.