Fermented Ingredients (Galactomyces, Bifida)
Fermented Ingredients (Galactomyces, Bifida) — skincare actives produced by culturing microorganisms such as yeast or bacteria on a substrate, yielding filtrates and lysates rich in amino acids, peptides, vitamins, and other metabolites. Galactomyces ferment filtrate and Bifida ferment lysate are two widely used examples, valued for their conditioning and skin-comforting properties.
Key points
- Fermentation breaks larger molecules into smaller components that can be easier for skin to interact with and may increase the concentration of certain beneficial metabolites.
- Galactomyces ferment filtrate is a yeast-derived ingredient often included in essences and marketed for radiance and hydration.
- Bifida ferment lysate is derived from Bifidobacterium cultures and is commonly used in barrier-supporting and soothing formulas.
- Fermented ingredients are typically used as leave-on humectant and conditioning agents rather than as exfoliants or peeling agents.
Frequently asked
What does 'ferment filtrate' or 'lysate' mean on an ingredient list?
A filtrate is the liquid strained from a microbial culture, and a lysate consists of the broken-down contents of microbial cells; both deliver a mix of metabolites rather than live organisms.
Can fermented ingredients cause irritation?
Most people tolerate them well, but as with any active, sensitivity to a specific ferment or the full formula is possible, so patch testing new products is sensible.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
