Saccharomyces Ferment Filtrate

Saccharomyces Ferment Filtrate is the watery, nutrient-rich liquid left over after you ferment a yeast (genus Saccharomyces).

The yeast cells themselves are filtered out so you're getting the "broth" of skin-friendly molecules: amino acids, peptides, minerals, vitamins, organic acids, and beta-glucan.

Evidence-wise, its relatives (like Galactomyces) are the ones with the most published lab work. Keratinocyte studies show these ferments can boost barrier-related markers. This ingredient is generally assumed to behave similarly thanks to its overlapping composition.

This ingredient may not be fungal acne safe because its a fermentation filtrate. The exact composition is batch-variable and can include fatty acids and lipids byproducts.