Science
Mechanism of Action
This ingredient functions by acting as an electrolyte to boost the skin's inherent water retention, significantly improving hydration for a plump appearance and the reduction of fine lines. It forms a protective film, effectively preventing moisture loss and maintaining skin hydration. As an excellent skin conditioner, it lubricates and smooths the skin, while also providing a soothing effect on dry, irritated, and sensitive conditions. Its antioxidant properties neutralize free radicals, combating signs of premature aging. It further supports skin cell repair and renewal, potentially stimulating collagen and elastin synthesis. Research indicates it may possess antimicrobial properties, aiding in managing acne-causing bacteria and fungi, and offers a calming effect for conditions like eczema and psoriasis by reducing inflammation and strengthening the skin's natural barrier.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 In a milky toner formulation, it promoted smoother, brighter skin while boosting hydration, demonstrating suitability for sensitive skin.
- 02 Demonstrated anti-inflammatory activity and inhibited both Cutibacterium acnes bacterium and Malassezia fungal genus in human volunteers.
- 03 Showed significant antioxidant activity (ABTS IC50 of 1.88 mg/mL), inhibited elastase by 83.4%, tyrosinase by 42.4%, and promoted cytokeratin 14 production.
Transparency
Dusting Analysis
No specific data regarding dusting practices or thresholds for this ingredient were found in the provided research.
The Formula
Formulation
Stability
This ferment generally thrives in acidic environments, with optimal activity observed between pH 4.5 and 6.5. While yeast proteins exhibit improved solubility with neutral salts like potassium chloride, the ferment itself maintains stability within this pH range.
Conflicts
- strong direct acids (e.g., AHAs, BHAs)
- physical exfoliators (to prevent over-exfoliation)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has deemed Saccharomyces/Potassium Ferment 'safe as used' in cosmetic formulations. While Saccharomyces cerevisiae (the yeast component) is generally recognized as safe (GRAS) by the FDA up to 5% in food, a specific maximum concentration for the ferment in cosmetics is not indicated in the provided data. Scientific research suggests it is minimally allergenic and rarely causes side effects, with EWG rating common concerns as 'LOW'.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Saccharomyces/Potassium Ferment is a highly valuable, well-tolerated ingredient that provides extensive benefits across skin types, including deep hydration, barrier support, anti-aging, and anti-inflammatory effects.
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