Science
Mechanism of Action
The fermentation of rice by Aspergillus meticulously breaks down complex starches into a diverse array of bioactive compounds. These include amino acids such as glutamic acid and tyrosine, along with peptides that can constitute over 80% of total protein, polyglutamic acid, polyphenols, γ-aminobutyric acid, vitamin B3 (niacin), and ceramides. Collectively, these components orchestrate multiple skin improvements: polyglutamic acid delivers superior moisturizing, antioxidant, and skin-brightening effects; peptides enhance overall skin vitality; polyphenols provide robust antioxidant protection by neutralizing free radicals; and the combination of γ-aminobutyric acid, niacin, and ceramides fortifies the skin barrier, brightens tone, and mitigates signs of aging. Furthermore, the ferment actively elevates intrinsic hyaluronic acid levels and boosts hyaluronan synthase expression, vital for sustained hydration, while also reducing inflammatory responses.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 In vitro studies on Red Rice Fermented by Aspergillus oryzae (RRFA) demonstrate significant anti-aging, antioxidant, moisturizing, repairing, and whitening effects, attributing these to beneficial compounds like polyglutamic acid, peptides, and ceramides.
- 02 Research on Rice Koji fermented with Aspergillus oryzae indicates heightened antioxidant activities and potent anti-aging properties.
- 03 General reviews confirm that rice fermentation products (RFPs) consistently enhance skin hydration, bolster barrier function, offer antioxidant defense, promote skin whitening, exert anti-inflammatory actions, and provide anti-aging benefits by boosting hyaluronic acid synthesis and reducing melanin.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal stability and activity for the ferment's beneficial components are observed across an acidic to neutral pH range, specifically between 3.0 and 7.5. This aligns with typical fermentation conditions, where microbial growth and product formation occur within this spectrum, with an ideal range of 4.5 to 5.0 for optimal yeast activity often involved in similar processes. Final product pH values for rice ferments often fall within 3.8 to 4.6.
Safety
Safety Profile
While direct CIR, SCCS, or FDA safety assessments specifically for 'ASPERGILLUS/ALCOHOL/RICE FERMENT LEES POWDER' are not yet explicitly published, the fermenting agent, Aspergillus oryzae, is well-regarded for not producing carcinogenic aflatoxins and is widely utilized in food and cosmetic fermentation. Broader expert panels on cosmetic ingredient safety have generally deemed various yeast-derived ingredients as safe for topical application.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This fermented rice derivative offers a multifaceted approach to skin health, providing proven anti-aging, moisturizing, brightening, and protective benefits through its rich array of bioactive compounds, making it a valuable addition to precision skincare formulations.
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References
Sources