Ingredient glossary / Humectant
Yeast ferment filtrate
On the label: Saccharomyces Ferment Filtrate · Humectant
What it is
The liquid from fermenting yeast, the base of several well-known Japanese essences; mostly water, amino acids and sugars.
Humectants: Humectants draw water into the outer layer of skin from the air and the layers below; glycerin is the classic one.
In the research
No PubMed papers mention this ingredient with skin or cosmetics; that is usual for simple materials like salt or water.
Other humectants
Dew & Balm describes ingredients from the public record and makes no claim about what a product will do for you. Statements about dietary supplements have not been evaluated by the FDA. If a product causes a reaction, stop using it; a reaction that spreads or affects breathing is a call to a doctor or 911.