Science
Mechanism of Action
The fermentation process utilizes Bacillus enzymes to cleave complex rice proteins into bioavailable amino acids and low-molecular-weight peptides. It naturally synthesizes gamma-polyglutamic acid (gamma-PGA), a humectant significantly more powerful than hyaluronic acid, while simultaneously releasing antioxidant ferulic acid and kojic acid derivatives to modulate melanin pathways and neutralize oxidative stress.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 In-vivo trials at 2.0% concentration demonstrated a measurable decrease in transepidermal water loss (TEWL) and significant elevation in stratum corneum moisture levels over 28 days.
- 02 In-vitro assessments at 5.0% showed potent tyrosinase inhibition, indicating high efficacy for evening skin tone and reducing localized hyperpigmentation.
Transparency
Dusting Analysis
Because it is a fermented 'filtrate,' brands often include it at negligible levels (under 0.5%) to market 'fermented skincare' without providing the structural amino acid benefits or barrier repair seen in the 2-5% clinical range.
The Formula
Formulation
Stability
Heat-sensitive; must be incorporated during the cooling phase below 40°C to ensure the integrity of the bioactive enzymes and peptides.
Synergies
- Hyaluronic Acid
- Niacinamide
- Vitamin C derivatives
Conflicts
- Strong oxidizing agents
- Extreme pH environments (<3.5 or >8.0)
- High heat processes
Safety
Safety Profile
While the specific filtrate is unreviewed by the CIR, its parent components—Rice Lees and Bacillus ferments—have a long history of safe use in both food and topical applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An exceptional multi-tasker for precision formulas targeting both deep cellular hydration and enzymatic skin brightening.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources