Science
Mechanism of Action
It boosts collagen and elastin production, improves elasticity, and hydrates the skin by increasing hyaluronic acid expression. Yeast also provides antioxidant and anti-inflammatory benefits, stimulating cellular energy and reducing dermal degradation.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 5% Saccharomyces boulardii fermented product filtrate reduced TEWL by 37.2% and increased stratum corneum hydration by 62.5% over four weeks.
- 02 Yeast extract (0.04%-0.3%) significantly increased hyaluronic acid, collagen, and elastin synthesis, while improving skin hydration and reducing wrinkles.
- 03 0.01% Saccharomyces cerevisiae fermentation residue increased skin brightness in a 3-week clinical trial.
Transparency
Dusting Analysis
No specific data suggests yeast is commonly dusted, as its effective concentrations can vary from very low to moderate percentages.
The Formula
Formulation
Stability
Yeast-derived ingredients are generally stable, with deactivated forms commonly used in skincare. Optimal performance is observed within a slightly acidic pH range.
Conflicts
- Some yeast lysates, such as Galactomyces, are anecdotally linked to breakouts in individuals prone to fungal acne, though not scientifically proven.
Safety
Safety Profile
The CIR Expert Panel found 33 yeast-derived ingredients safe as used in cosmetics. Patch testing is recommended due to potential individual sensitivity, despite generally good tolerance.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Yeast is a valuable multi-functional ingredient, clinically proven to hydrate, brighten, and support anti-aging across all skin types with low irritancy and comedogenicity.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources