Common Name(s): Zygosaccharomyces microellipsoides ferment,zygosaccharomyces microellipsoides ferment,saccharomyces yeast ferment,brightening anti-aging postbiotic
CAS Number: N/a
DESCRIPTION
What It Does: Brightens skin through yeast-derived melanin transfer inhibitors, stimulates anti-aging sirtuin pathways from nad+ precursor delivery, provides antioxidant protection from ergothioneine's uniquely stable thiol radical scavenging, and modulates skin immunity from beta-glucan cell wall fragments.
Why It's Used: Saccharomyces ferments are the heritage yeast ferment technology behind iconic products like sk-ii and the original japanese sake brewery worker hand-brightening observation — the yeast metabolite profile providing simultaneously brightening, anti-aging, and barrier-supporting activity.
How It Works: Saccharomyces fermentation produces: niacinamide precursors and adenosine (melanin transfer inhibition, melanocyte-keratinocyte synapse disruption → brightening); nad+ precursors → sirt1 activation → anti-aging gene expression; ergothioneine (trimethylbetaine thiourea, exceptional radical stability from resonance delocalisation → antioxidant); beta-1,3/1,6-glucan (dectin-1 trained immunity).
Typically Found In: K-beauty brightening,anti-aging,premium postbiotic
TECHNICAL DETAILS
Primary Category: Active ingredient – skin microbiome support
Secondary Functions: Microbiome balance,prebiotic effect
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%–15%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Fermentation-derived or plant-extracted.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 – very low
Comedogenicity Rating: 0/5 – non-comedogenic
Sensitivity Concerns: Non-irritating; beneficial for sensitive skin.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,niacinamide,soothing actives
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Substrate-specific yeast ferments: grape lees ferment provides resveratrol/anthocyanin biotransformation; rice ferment produces kojic acid and rice amino acids; apple/fruit ferments provide malic acid and polyphenol aglycones — the substrate selection determines the supplementary bioactive profile beyond the core yeast metabolite portfolio.
Last Verified: 2026-03-22
Primary Sources: Cosing database,saccharomyces yeast ferment brightening anti-aging review