Science
Mechanism of Action
As a humectant, LEUCONOSTOC/GRAPE JUICE FERMENT FILTRATE actively draws moisture into the skin, aiding in sustained hydration and suppleness. It concurrently functions as a skin conditioning agent, contributing to a smoother and healthier skin texture. Ferment filtrates of this nature are broadly understood to possess antimicrobial characteristics, potentially supporting the skin's natural defense by influencing the microbial balance and offering mild exfoliation through the lactic acid generated during fermentation.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient exhibits optimal stability and efficacy within an acidic pH range, specifically between 3.0 and 4.5. This aligns with the natural acidity of grape juice, where the fermenting Leuconostoc bacteria thrive, often resulting in a slight pH reduction during the fermentation process (e.g., from 3.80 to 3.70).
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has not conducted a direct safety assessment for LEUCONOSTOC/GRAPE JUICE FERMENT FILTRATE. While broader reviews cover various yeast-derived ingredients, a specific conclusion for this particular ferment is not available. A related ingredient, Leuconostoc/Radish Root Ferment Filtrate, demonstrated no genotoxicity in an Ames test up to 5000 µg/plate. General concerns noted by CIR for botanical ingredients include potential pesticide residues and heavy metals.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While offering recognized humectant and skin conditioning benefits with inferred probiotic-like activity, specific safety and efficacy data for LEUCONOSTOC/GRAPE JUICE FERMENT FILTRATE remain largely unreviewed by independent bodies.
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