Science
Mechanism of Action
The efficacy of Lactobacillus/Betula Platyphylla Japonica Juice Ferment is attributable to its synergistic components and enhanced bioactivity post-fermentation. The Lactobacillus ferment component is recognized for its potential as a DNA repair enzyme, exhibiting significant antimicrobial and anti-inflammatory properties that may aid in addressing concerns such as acne and rosacea. It actively contributes to establishing a balanced skin microflora and stimulates the endogenous production of beta-defensins within skin cells. Concurrently, the birch sap provides a rich spectrum of amino acids, antioxidants, and essential minerals, crucial for maintaining optimal skin hydration and integrity of the skin barrier. The fermentation process further amplifies the ingredient's antioxidant potential, liberates beneficial phenolic compounds, and increases enzymatic activity, converting sugars into potent organic acids and other bioactive metabolites.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This fermented ingredient demonstrates enhanced stability and efficacy within an acidic pH range, specifically between pH 3.0 and 5.8. Fermentation with Lactobacillus strains inherently lowers the pH, with documented examples such as pH 3.0-4.2 for Lactobacillus reuteri in birch sap. Optimal acid tolerance and long-term stability have been observed when Lactobacillus cells are cultivated at lower pH values (e.g., 5.0) compared to higher pH environments (e.g., 5.8).
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel, in their June 2025 assessment, affirmed the safety of Lactobacillus Ferment and related derivatives (which include components of this ingredient) for use in cosmetic applications. The highest reported concentration of use for Lactobacillus Ferment in face and neck products is 5.6%. While birch sap itself generally possesses an excellent safety profile, individuals with known sensitivities or allergies to plants within the birch family may potentially experience allergic reactions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A valuable bio-fermented active offering comprehensive benefits for skin health, including microbiome balance, anti-inflammatory support, enhanced barrier function, and moisturizing properties, suitable for diverse skin types.
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