What it is
Lactobacillus/Soybean Ferment Extract is made by fermenting soybean material with Lactobacillus cultures, yielding a mixture that can contain peptides, amino acids, sugars, and other metabolites. In sunscreens and skincare it is used as a skin-conditioning ingredient intended to support softness and hydration. Fermentation can alter the profile of the soybean-derived components and is a common approach in Korean skincare formulation.
Safety & warnings
Fermented soybean extracts are generally well tolerated in cosmetic use. Because the ingredient is soy-derived, individuals with known soy sensitivities may wish to patch test, and as with any botanical ferment, very reactive skin may occasionally respond to its complex mixture of components.
Origin & sourcing
It is a natural-derived, fermented ingredient produced by culturing soybean substrate with Lactobacillus bacteria and then extracting the resulting ferment.
Questions everyone asks
How is this ingredient made?
It is produced by fermenting soybean material with Lactobacillus bacteria and then extracting the resulting ferment, which contains peptides, amino acids, and other metabolites.
What does it do for skin?
It is used as a skin-conditioning ingredient meant to support softness and hydration.