Common Name(s): Aspergillus ferment filtrate,aspergillus ferment filtrate,aspergillus koji ferment,kojic acid enzyme biotransformation
CAS Number: N/a
DESCRIPTION
What It Does: Provides kojic acid brightening from tyrosinase cu2+ chelation, maximally biotransformed polyphenol aglycones with improved sc penetration from the most comprehensive enzyme cocktail, and conditioning skin metabolites from the comprehensive fermentation output.
Why It's Used: Aspergillus produces the most comprehensive enzyme set for botanical biotransformation โ protease, amylase, glucosidase, lipase, and pectinase activity simultaneously biotransforming all substrate macromolecules, providing richer metabolite profiles than any other single fermentation organism.
How It Works: Aspergillus oryzae/niger enzyme complex: beta-glucosidase cleaves botanical glycosides to aglycone forms (10-50x higher logp โ improved sc penetration); protease hydrolyses botanical proteins to bioactive peptides; kojic acid (5-hydroxy-2-(hydroxymethyl)-4-pyranone) from glucose metabolism chelates tyrosinase cu2+ (ic50 ~10 um) โ melanin synthesis inhibition.
Typically Found In: K-beauty brightening,comprehensive postbiotic,premium ferment
TECHNICAL DETAILS
Primary Category: Active ingredient โ 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%โ15%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Fermentation-derived or plant-extracted.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ 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
Aspergillus substrate specificity: rice/soybean ferments produce highest kojic acid; botanical-rich substrates (ginseng, green tea, garlic) undergo most complete polyphenol biotransformation; multi-substrate ferments combine both outputs โ substrate design determines the active balance.
Last Verified: 2026-03-22
Primary Sources: Cosing database,aspergillus koji ferment kojic acid review