Science
Mechanism of Action
The precise fermentation process transforms raw rice nutrients into a spectrum of highly bioavailable compounds, including essential amino acids, polypeptides, organic acids, and vitamins, which are readily absorbed and utilized by the skin. This filtrate acts as a potent antioxidant, effectively neutralizing damaging free radicals and providing protection against environmental stressors. Its mechanism involves actively reducing inflammation, stimulating endogenous collagen synthesis, and enhancing cellular regeneration, thereby measurably improving skin elasticity, refining texture, and diminishing the appearance of fine lines and wrinkles. Furthermore, it significantly boosts the skin's natural barrier function by fostering the production of natural moisturizing factors (NMFs) and supporting the structural integrity of the stratum corneum. The presence of lactic acid contributes to a gentle exfoliation and helps maintain the skin's natural pH balance, supporting the acid mantle, while also inhibiting melanin production for a more luminous complexion and harmonizing the skin's microbiome to strengthen its protective capabilities.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Clinical data indicates that concentrations between 0.1% and 5% are effective in leave-on products for promoting overall skin health, evidenced by reduced inflammation, enhanced collagen production, improved skin elasticity and texture, and a visible reduction in fine lines and wrinkles. It also significantly bolsters the skin's natural barrier function and provides effective moisturization.
- 02 At a 5% concentration, a similar Saccharomyces boulardii fermented product filtrate demonstrated an average reduction of trans-epidermal water loss (TEWL) by 37.2% and an increase in stratum corneum hydration by 62.5% over four weeks of continuous use, confirming its efficacy in repairing damaged skin barriers.
- 03 A 2% concentration, branded as 'Brice,' exhibited a demonstrable whitening effect comparable to that achieved with 0.5% Q-ursolic acid. Separately, a 20% dilution of a rice bran fermentation solution yielded a 9.29% improvement in skin whitening and a 44.31% improvement in moisturization over a 30-day period.
Transparency
Dusting Analysis
Effective concentrations for delivering key benefits, such as barrier repair, anti-aging, and brightening, commence at 0.1% for leave-on products, with more significant improvements observed at 2% and 5%. While minute quantities below this range may be present in formulations, they are unlikely to confer the comprehensive clinical benefits identified in research.
The Formula
Formulation
Stability
The fermentation process inherently contributes to a more stable and pH-balanced formulation. For optimal integration, it is recommended to incorporate this ingredient during the later stages of the formulation process, ensuring that the temperature of the mixture does not exceed 60 °C to preserve its active components.
Safety
Safety Profile
Generally recognized as a safe cosmetic ingredient with an excellent safety profile, the CIR Expert Panel has affirmed that rice-derived ingredients, including those from rice bran and germ, are safe within established practices of use and concentrations. The fermentation process itself is theorized to reduce the presence of potentially allergenic proteins, contributing to its mild nature. While widely tolerated across all skin types, a small subset of individuals with heightened skin sensitivity or specific allergies may experience mild, transient irritation or redness, for which a patch test is advisable.
Your Skin
Skin Compatibility
Our Assessment
Verdict
SACCHAROMYCES/RICE BRAN/GERM FERMENT FILTRATE is a highly valuable ingredient for precision skincare, offering significant hydration, robust barrier repair, potent anti-aging, and effective brightening benefits across all skin types, substantiated by a strong safety profile.
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