Science
Mechanism of Action
LACTIS FAEX operates through multiple pathways to improve skin health. It functions as a potent moisturizer and humectant, bolstering the skin's natural barrier and enhancing moisture retention for softer, smoother skin. Rich in beneficial compounds such as beta-glucan, niacinamide, proteins, amino acids, vitamins, and minerals, it offers anti-inflammatory and antioxidant benefits. Crucially, it significantly inhibits the activity of collagenase and elastase, enzymes responsible for the degradation of collagen and elastin, thereby supporting skin elasticity, reducing fine lines, and promoting a more youthful appearance. It also strengthens the skin's immune response and provides protection against oxidative stress.
Research
Clinical Evidence
High confidenceFor comprehensive anti-aging effects targeting both collagen and elastin degradation, concentrations between 10% and 20% are most impactful. However, significant collagenase inhibition is observed at concentrations as low as 0.5%.
Transparency
Dusting Analysis
LACTIS FAEX demonstrates efficacy across a wide concentration range. While significant collagenase inhibition is observed at concentrations as low as 0.5%, robust elastase inhibition, crucial for comprehensive anti-aging claims related to elasticity, requires concentrations of 10% or higher. Therefore, products featuring LACTIS FAEX below 1% may provide some barrier support and collagen protection, but are likely to be dusting if making broad anti-aging claims related to elastin degradation. Concentrations below 0.1% would be considered a red flag for any meaningful active benefit beyond basic skin conditioning.
The Formula
Formulation
Stability
LACTIS FAEX is hygroscopic and moisture-sensitive. Aqueous solutions typically range from pH 5.0 (for a 5% solution) to pH 7.5 (for a 2% solution). Yeast proteins within the extract have shown improved emulsion stability when precipitated at acidic pH levels (3.5-5).
Safety
Safety Profile
The CIR Expert Panel considers Yeast Extract generally safe for topical cosmetic use, although the specific species used in cosmetic manufacturing can vary. A human irritation assay involving a 1% *Saccharomyces cerevisiae* extract formulation showed no severe irritation. It is also 'Generally Recognized as Safe (GRAS)' for food applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
LACTIS FAEX is a valuable, multifaceted ingredient offering significant anti-aging, moisturizing, and protective benefits for all skin types, with strong dose-dependent efficacy in inhibiting collagen and elastin degradation.
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