Science
Mechanism of Action
The fermentation of Shea Butter by the yeast Candida bombicola transforms heavy triglycerides into free fatty acids—specifically oleic and linoleic acids—which penetrate the skin more efficiently. This process also generates sophorolipids, natural biosurfactants that neutralize acne-causing bacteria like C. acnes and S. aureus by destabilizing their cell membranes, while simultaneously inhibiting the 5-alpha reductase enzyme to regulate excess sebum production.
Research
Clinical Evidence
High confidence3%
Key findings
- 01 Concentrations between 1% and 2% significantly inhibit the growth of Cutibacterium acnes and reduce markers of inflammation and surface sebum.
- 02 Usage at 3% to 5% demonstrates superior skin hydration and accelerated barrier recovery compared to non-fermented shea butter equivalents.
Transparency
Dusting Analysis
To achieve the antimicrobial and sebum-regulating benefits, a minimum of 1% is required. Formulations using this ingredient below 1% are likely 'label dusting' for the marketing appeal of fermented shea without providing therapeutic skin benefits.
The Formula
Formulation
Stability
Exhibits excellent thermal and pH stability. Unlike raw shea butter, this filtrate prevents crystallization and graininess in emulsions, contributing to a smoother texture.
Synergies
- Ceramides
- Niacinamide
- Squalane
Conflicts
- Formulas with salt concentrations exceeding 5% may compromise the efficiency of its natural biosurfactants.
Safety
Safety Profile
Both the shea butter precursor and the yeast-derived ferment are well-vetted by the CIR Expert Panel with no known safety concerns for topical use.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A high-performance biotech lipid that bridges the gap between intensive barrier nourishment and blemish control.
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