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ASPERGILLUS/SACCHAROMYCES/MORUS ALBA FRUIT/RICE FERMENT LEES EXTRACT.

Valuable / HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING

A multi-functional bio-active complex derived from the dual fermentation of White Mulberry and Rice Lees. This precision ingredient utilizes microbial engineering to transform botanical proteins into highly bioavailable molecules that target both the structural integrity and pigment uniformity of the skin.

Brightening Humectant Antioxidant Collagen Stimulant Barrier Repair

Science

The fermentation process via Aspergillus and Saccharomyces breaks down large plant polysaccharides into small-chain peptides, amino acids, and organic acids. Mulberry-derived stilbenoids (Mulberroside A) and rice-derived kojic acid work synergistically to inhibit tyrosinase activity, while the fermented nutrient profile upregulates collagen synthesis and enhances the expression of Aquaporin 3 and Filaggrin to reinforce the skin barrier.


Research

High confidence
Effective range 1–5%
Optimal

2%

Key findings

  1. 01 In vitro 3D models demonstrate up to a 12x increase in Type I and Type III collagen expression.
  2. 02 Melanocyte culture testing showed a 20-30% reduction in melanin synthesis via enzymatic inhibition.
  3. 03 Clinical application of 2.0% concentrations resulted in a 10% increase in hydration and a significant reduction in TEWL over 28 days.

Transparency

Commonly dusted
Min. effective
1%
Red flag below
0.1%

Due to its high cost and 'clean beauty' marketing appeal, this extract is frequently used at 'dusting' levels (below 0.1%) for label claims. To achieve measurable improvements in skin density and barrier function, a minimum concentration of 1.0% is required.


The Formula

Solubility
Water
Optimal pH 4.5 – 6.5
0 7 14

Stability

Heat stable during processing up to 85°C, however, to preserve sensitive bio-actives, it is ideally incorporated during the cooling phase below 40°C.

Synergies

  • Niacinamide
  • Hyaluronic Acid
  • Vitamin C derivatives

Conflicts

  • Strong oxidizing agents
  • Highly alkaline environments (pH > 8.0)

Safety

CIR Status
Safe as used
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

Classified as non-sensitizing under the 2023 CIR assessment of yeast-derived ingredients. Safe for long-term topical use.


Your Skin

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

Our Assessment

Valuable

A sophisticated fermented active that bridges the gap between traditional J-beauty wisdom and modern clinical performance in brightening and barrier health.


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