Saccharomyces … Ferment

Saccharomyces/Xylinum/Black Tea Ferment is a fermented ingredient created by cultivating Saccharomyces yeast and Xylinum bacteria in black tea. During fermentation, these microorganisms break down the tea's polyphenols and produce metabolites—compounds that result from microbial activity—which become the active components of the final extract.This ingredient functions primarily as a skin conditioner, meaning it works to improve skin texture, hydration, and overall comfort rather than acting as an active treatment for specific conditions.

During fermentation, the yeast and bacteria consume compounds in black tea and produce metabolites as byproducts. These metabolites include amino acids, organic acids, and other small molecules that can penetrate the skin more readily than the original plant compounds. This 'pre-digestion' by microbes is thought to make the tea's benefits more bioavailable.Once in the product, these metabolites are believed to work through multiple gentle pathways: providing antioxidant defence, supporting skin's natural moisture balance, and potentially interacting with the skin's microbiota to promote a h…

This ingredient is typically used in serums, essences, and hydrating products at concentrations between 60–70%. Because it is usually a primary or secondary ingredient rather than a minor botanical extract, you will generally encounter it in dedicated formulations designed around fermented complexes. Apply to clean skin before moisturiser, or as part of a layered routine. No special timing is required; use as you would any other hydrating or conditioning product.

Generally well-tolerated across skin types. Those with sensitivity to fermented foods or tea should patch-test first, as fermentation byproducts may occasionally trigger mild irritation in very reactive skin.