Science
Mechanism of Action
This advanced ingredient operates through a dual mechanism. The Saccharomyces ferment component, rich in essential nutrients, amino acids, beta-glucans, and vitamins, acts as a potent humectant to deeply hydrate the skin and bolster its protective barrier. It also exhibits antioxidant properties, neutralizing free radicals and mitigating oxidative stress, while promoting collagen synthesis, reducing inflammation, and enhancing skin elasticity. Certain yeast ferments further contribute by increasing cellular respiration and metabolism, and can inhibit tyrosinase to reduce melanin synthesis. Concurrently, the silver component, present as ions or nanoparticles within the ferment, delivers targeted antimicrobial efficacy against a spectrum of pathogens including *P. acnes*, *S. aureus*, and *Candida albicans*, thereby supporting a balanced skin microbiome and addressing blemish-prone conditions.
Research
Clinical Evidence
Medium confidence5%
Key findings
- 01 Topical application of Saccharomyces cerevisiae extract formulations significantly improved skin hydration, refined microrelief, and enhanced transepidermal water loss (TEWL) after 30 days of daily use.
- 02 Saccharomyces boulardii fermented product filtrate reduced trans-epidermal water loss (TEWL) by 37.2% and increased stratum corneum hydration by 62.5% over four weeks.
- 03 Silver-containing yeast extract effectively diminished the adhesion and metabolic activity of *S. aureus* 1536 cells.
- 04 Silver nanoparticles combined with Saccharomyces cerevisiae achieved maximal inhibition of *P. acnes*, a primary acne-causing bacterium, in vitro.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Saccharomyces cerevisiae, the base for the ferment, demonstrates optimal growth and fermentation activity within an acidic pH range, typically between 4.0 and 6.5. Its efficacy may be compromised at higher, more alkaline pH values (e.g., 8.0 or 9.0).
Safety
Safety Profile
Saccharomyces Ferment Filtrate is generally recognized as safe for cosmetic applications with no reported side effects. Related yeast-derived ingredients, such as Saccharomyces Cerevisiae Extract, have been deemed safe in cosmetics by the CIR Expert Panel under current use concentrations. While Saccharomyces cerevisiae holds FDA GRAS status for specific food uses up to 5%, there are no explicit GHS classifications or toxicity data for 'Saccharomyces/Silver Ferment' specifically.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Saccharomyces/Silver Ferment is a valuable ingredient, delivering comprehensive skin benefits through enhanced hydration, antioxidant protection, and targeted antimicrobial action, making it suitable for a wide range of skin concerns and types.
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