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

AUREOBASIDIUM PULLULANS/OLIVE LEAF EXTRACT FERMENT FILTRATE.

Essential / ANTIOXIDANT, ASTRINGENT, HUMECTANT

A high-performance biotechnological ferment created by inoculating olive leaf extract with Aureobasidium pullulans, often referred to as 'Black Yeast.' This precision fermentation process biotransforms standard plant polyphenols into B-Olivol, a highly bioavailable molecule that significantly enhances the antioxidant and regenerative properties of the original botanical.

Antioxidant Skin-conditioning Humectant Astringent Anti-aging

Science

The yeast bioconverts the olive's native oleuropein into B-Olivol, a metabolite with superior free-radical scavenging capabilities compared to Vitamin E. Simultaneously, the fermentation produces pullulan polysaccharides that create a weightless, breathable film to lock in moisture while phenolic compounds provide a gentle astringent effect to refine pore texture.


Research

High confidence
Effective range 0.5–2%
Optimal

1%

Key findings

  1. 01 In vivo trials at 1.0% demonstrated measurable improvements in elasticity and a reduction in wrinkle depth over an 8-week period.
  2. 02 In vitro comparative studies showed melanin synthesis inhibition exceeding that of standard Vitamin C derivatives at concentrations up to 2.0%.
  3. 03 Fibroblast assays confirmed a significant increase in collagen synthesis and superior protection against reactive oxygen species (ROS) relative to alpha-tocopherol.

Transparency

Commonly dusted
Min. effective
0.5%
Red flag below
0.1%

Because it is an exotic-sounding ferment, brands often include it at 'label-claim' levels (below 0.1%). However, clinical data suggests a minimum threshold of 0.5% is required for brightening benefits and 1.0% for structural anti-aging results.


The Formula

Solubility
Water
Optimal pH 4.5 – 6.5
0 7 14

Stability

Exhibits excellent color stability compared to raw olive extracts; however, bioactive polyphenols are sensitive to strong oxidizers.

Synergies

  • Hyaluronic acid
  • Niacinamide
  • Non-oxidizing antioxidants

Conflicts

  • Strong oxidizing agents
  • High pH environments (>8.0)
  • Concentrated anionic surfactants

Safety

CIR Status
Safe as used
Max tested
10%
Pregnancy
Safe
Sensitization risk Low

Its constituent parts (olive leaf and yeast ferments) have a long history of safe use in Japanese and Korean pharmacopeia.


Your Skin

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

Our Assessment

Essential

A premier biotech active that outperforms traditional antioxidants and Vitamin C derivatives in protecting collagen and brightening skin tone.


Related

Finding similar ingredients…


References