Science
Mechanism of Action
The fermentation process intricately modifies rice, breaking down complex proteins into smaller, highly bioavailable peptides that actively boost skin hydration, stimulate collagen synthesis, and enhance elasticity. This enzymatic action also liberates bound antioxidants, such as polyphenols and flavonoids, substantially increasing the ingredient's antioxidant capacity. On a cellular level, it aids in reducing melanin production to brighten dark spots, decreases inflammatory markers, and fosters a balanced skin microbiota by nurturing beneficial bacteria while inhibiting harmful ones.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal activity for key enzymes, such as glucoamylase produced by Rhizopus, occurs within a pH range of 4-6. The fermentation process itself tends to yield stable, pH-balanced formulations, with typical Rhizopus-fermented rice products maintaining a pH between 3.8 and 4.6. Rhizopus oryzae thrives across a broad pH range of 3.4-7.5.
Safety
Safety Profile
Direct CIR or SCCS safety assessments for 'RHIZOPUS/RICE FERMENT' are not available, and while the CIR has requested more data for various yeast-derived ingredients, specific coverage for this ferment is unclear. The ingredient is generally regarded as non-irritating and milder on the skin compared to its unfermented counterparts, potentially due to the breakdown of allergenic proteins during fermentation. FDA's GRAS affirmation for Saccharomyces cerevisiae (a different yeast) up to 5% for food use does not directly apply here.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Rhizopus/Rice Ferment is a valuable, multi-functional ingredient that enhances skin hydration, elasticity, and brightness, while offering significant antioxidant and anti-inflammatory support, making it suitable for all skin types due to its low irritancy profile.
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References
Sources