Science
Mechanism of Action
This ingredient functions as a potent antioxidant, utilizing its copper content to neutralize free radicals that damage skin cells and accelerate aging. It exhibits significant anti-inflammatory effects by inhibiting the production of pro-inflammatory cytokines. Furthermore, it boosts the synthesis of essential proteins like collagen and elastin, crucial for maintaining skin firmness and elasticity. It also enhances skin hydration by stimulating ceramide production and is rich in natural moisturizing factors, leading to increased skin thickness, density, and improved moisture retention. Additionally, it contributes to skin brightening and even tone by inhibiting melanin production, helps regulate excess sebum, minimizes the appearance of fine lines, and can alleviate redness following sun exposure.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal stability is achieved within a pH range of 4.0 to 5.0, consistent with observations for related yeast extracts. A typical use level in formulations is between 1% and 5%.
Safety
Safety Profile
The CIR Expert Panel has indicated 'Insufficient Data' for a group of yeast-derived ingredients, including 'Saccharomyces Ferment Lysate Filtrate', precluding a definitive safety determination under intended cosmetic use. Conversely, EWG Skin Deep rates 'Saccharomyces/Copper Ferment Lysate Filtrate' as 'LOW' hazard for concerns such as cancer, allergies, and developmental toxicity. However, EWG also notes that animal studies cited by the EPA have reported classified toxic effects at moderate doses.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While demonstrating a wide array of mechanistic benefits for skin revitalization and protection, the CIR Expert Panel currently reports insufficient data for a conclusive safety assessment of this ingredient under cosmetic use conditions.
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References
Sources