Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle

AUREOBASIDIUM PULLULANS/RICE BRAN FERMENT.

Valuable / HUMECTANT, SKIN CONDITIONING, SKIN PROTECTING

A sophisticated biotechnological active created through the fermentation of nutrient-rich rice bran by the yeast-like fungus Aureobasidium pullulans. This process transforms complex grain proteins into highly bioavailable peptides and polysaccharides that deliver dual-action hydration and barrier reinforcement.

humectant skin conditioning barrier repair brightening anti-aging

Science

This ferment functions by breaking down rice bran’s structural proteins into smaller amino acid chains that penetrate more effectively while simultaneously producing a pullulan-rich film on the skin's surface. It acts as a bio-mimetic humectant that stabilizes the microbiome, inhibits tyrosinase activity to manage hyperpigmentation, and triggers fibroblasts to increase the synthesis of essential collagen and elastin fibers.


Research

High confidence
Effective range 2–20%
Optimal

10%

Key findings

  1. 01 A 20% concentration demonstrated a 44.31% surge in skin hydration and a 9.29% reduction in melanin levels over 30 days.
  2. 02 In vivo testing at 10% concentration confirmed a significant >10% boost in collagen and elastin synthesis alongside reduced TEWL.
  3. 03 Usage at 2% facilitates the formation of an elastic water-gel film that improves immediate barrier resilience.

Transparency

Commonly dusted
Min. effective
2%
Red flag below
0.5%

Due to its complex INCI name and perceived 'natural' appeal, it is often included at concentrations below 0.5% for marketing claims. However, clinical data suggests a minimum of 2% is required for film-forming benefits, and 10-20% for significant structural anti-aging and brightening results.


The Formula

Solubility
Water
Optimal pH 4 – 8
0 7 14

Stability

Highly stable, nonionic ingredient that maintains integrity across broad pH ranges and exhibits excellent electrolyte resistance. It can naturally thicken formulas into sprayable gels.

Synergies

  • Niacinamide
  • Hyaluronic Acid
  • Vitamin C derivatives

Conflicts

  • High concentrations of ammonium sulfate

Safety

CIR Status
Not reviewed (constituents safe)
Max tested
20%
Pregnancy
Safe
Sensitization risk Low

While the specific ferment is not yet indexed by CIR, its base components (Rice Bran and Pullulan) are widely recognized as safe. It is ECOCERT certified and demonstrates high biocompatibility.


Your Skin

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

Our Assessment

Valuable

An exceptional multi-functional ferment that bridges the gap between deep cellular repair and immediate surface hydration.


Related

Finding similar ingredients…