Science
Mechanism of Action
SACCHAROMYCES/RICE FERMENT LEES EXTRACT FILTRATE operates via several interconnected biological pathways. It functions as a potent antioxidant, neutralizing detrimental free radicals to effectively combat early signs of aging such as fine lines, skin sagging, and textural irregularities, and may additionally stimulate endogenous collagen production. Its rich profile of amino acids, peptides, and minerals closely mimics the skin's Natural Moisturizing Factors (NMFs), facilitating profound hydration and enhancing hyaluronic acid synthesis, which subsequently reinforces the skin barrier and minimizes transepidermal water loss. The ingredient actively contributes to a brighter, more uniform skin tone by inhibiting tyrosinase, a key enzyme in melanogenesis, thereby reducing melanin generation. It also strengthens the skin's intrinsic resilience against environmental stressors, refines skin texture, and aids in pore minimization. Due to its gentle, probiotic-rich composition, it is adept at soothing sensitive skin, alleviating redness, itching, and irritation, and rebalancing the skin's microflora. Furthermore, it regulates sebum production to maintain optimal oil balance without stripping the skin. The fermentation process itself enhances the bioavailability of nutrients, ensuring superior absorption. It also exhibits notable anti-inflammatory properties.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 A formulation containing 0.01% (v/v) of a similar Saccharomyces cerevisiae fermentation residue demonstrated increased skin whitening activity in a clinical study and suppressed melanin generation in B16F10 cells.
- 02 As RiFerm®, this ingredient exhibits strong anti-oxidant and anti-wrinkle activities in vitro, with significant improvements in skin hydration and elasticity observed in vivo.
- 03 Sake ferment filtrate, which includes this ingredient, contains kojic acid, shown to significantly reduce hyperpigmentation over eight weeks. It also enhances skin hydration and elasticity by promoting hyaluronic acid synthesis.
Transparency
Dusting Analysis
No data suggesting dusting practices for this ingredient were found in the research.
The Formula
Formulation
Stability
The Saccharomyces cerevisiae yeast utilized in its production thrives optimally between pH 4.5 and 5.0, with a broader stability range of 3.0 to 7.5. Fermentation typically occurs within pH 5 to 7, and a reported aqueous extract exhibited a pH of 6.50. This indicates the ingredient's robust stability across typical cosmetic pH environments, from slightly acidic to neutral.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel noted insufficient data for a broader category of yeast-derived ingredients, including 'Saccharomyces Ferment Filtrate', under intended cosmetic conditions. However, neither the US FDA nor European Cosmetics Regulation classify this ingredient as harmful, with general recommendations to follow manufacturer instructions. It is widely considered to possess an excellent safety profile, with adverse reactions being generally uncommon, though individual sensitivities are always possible.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This multi-functional fermented extract is a valuable ingredient, delivering significant benefits in hydration, brightening, and anti-aging across all skin types, with a demonstrated low risk of irritation.
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