Humectant
LACTOBACILLUS/CASTANOPSIS SIEBOLDII BRANCH/LEAF EXTRACT FERMENT FILTRATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A fermented Japanese oak (Castanopsis sieboldii) branch/leaf filtrate produced by Lactobacillus, used as a humectant. Polyphenol-rich and well tolerated, but specific safety data on this ferment is limited.
Function
Skin benefits
- Humectant moisture-binding
- Polyphenol-derived antioxidant activity
- Skin conditioning
- Mild astringent feel
Known concerns
- Limited published safety data on this specific ferment
- Variable composition between batches
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related humectants
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.