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Moumoujus

BACILLUS/RICE LEES FERMENT FILTRATE.

Valuable CAS - / SKIN CONDITIONING

A bio-optimized extract derived from the fermentation of rice by-products using Bacillus subtilis. This nutrient-dense filtrate serves as a multifunctional restorative agent, bridging the gap between traditional Japanese beauty wisdom and modern precision biotechnology.

Summary

Skin-conditioning Antioxidant Moisturizing Barrier Repair

Science

Mechanism of Action

During fermentation, Bacillus subtilis produces extracellular enzymes that break down complex rice proteins into low-molecular-weight peptides and amino acids for superior skin penetration. The process synthesizes Gamma-Polyglutamic Acid (gamma-PGA) to boost natural moisturizing factors, while simultaneously releasing ferulic acid and vitamins that provide antioxidant protection and inhibit tyrosinase for a brighter complexion.

Research

Clinical Evidence

High confidence
Effective range 1–3%
Optimal

2%

Key findings

  1. 01 Clinical evaluations at 1.0-3.0% indicate significant improvements in dermal elasticity and a measurable reduction in the appearance of sagging pores.
  2. 02 Studies at 2.0% demonstrate a marked decrease in transepidermal water loss (TEWL) and enhanced bioavailability of phenolic compounds for barrier reinforcement.
  3. 03 In vitro testing confirms potent antioxidant activity through the scavenging of DPPH radicals and promotion of collagen accumulation.

Transparency

Dusting Analysis

Commonly dusted
Min. effective
1%
Red flag below
0.5%

Due to its high manufacturing cost and 'probiotic' marketing appeal, this ingredient is often 'dusted' at concentrations below 0.5% in mass-market products. At Moumoujus, we prioritize the 1.0-3.0% range supported by clinical data to ensure efficacy in skin elasticity and barrier repair.

The Formula

Formulation

Solubility
Water
Optimal pH 4.5 – 6.5
0 7 14

Stability

Thermolabile; must be integrated during the cooling phase (below 40°C) to maintain the integrity of bioactive peptides and enzymes.

Synergies

  • Hyaluronic Acid
  • Niacinamide
  • Vitamin C

Conflicts

  • Strong oxidizing agents
  • High heat (>50°C)
  • Extreme pH environments

Safety

Safety Profile

CIR Status
Safe as used
Max tested
100%
Pregnancy
Safe
Sensitization risk Low

Classified as Generally Recognized as Safe (GRAS). Recent CIR reviews of similar rice-derived ferments confirm a high safety profile even at 100% concentration, though typical functional use is 1-5%.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

A high-performance biotech ferment that delivers measurable improvements in skin density, hydration, and tone when formulated at active concentrations.

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References

Sources