Bifida Ferment Filtrate

This ingredient is a postbiotic made by fermenting Bifidobacterium (a probiotic bacteria) and then filtering out the liquid portion. It has skin conditioning properties.

Much of the evidence for this ingredient is borrowed from the lysate form of this ingredient, which has a much stronger research base.

Fungal acne

This ingredient is generally considered fungal acne (Malassezia) safe; Bifidobacterium is a bacterium, not a yeast or fungus.

The fungal acne concern with fermented ingredients mainly applies to yeast-derived ferments like Saccharomyces and Galactomyces, because those are in the same kingdom as Malassezia and could theoretically contain residual compounds that feed it.

Bifida is a completely different organism, so on its own it doesn't provide a food source for the Malassezia yeast that causes fungal acne.