Science
Mechanism of Action
This ingredient functions by modulating the skin's delicate microbial ecosystem, promoting a harmonious balance of beneficial microorganisms to mitigate concerns such as acne and irritation. The fermentation process yields a bioactive complex rich in peptides, enzymes, and organic acids, including lactic acid, which collectively contribute to skin regeneration, robust barrier function, and maintaining an optimal skin pH. It also exhibits humectant properties for enhanced moisture retention, delivers antioxidant protection against environmental damage, and possesses demonstrated anti-microbial and anti-inflammatory capabilities, alongside potential DNA repair benefits.
Research
Clinical Evidence
High confidenceEfficacy is consistently observed within the 1-5% range for various skin benefits.
Key findings
- 01 Clinical research indicates that a 1% concentration significantly reduced skin sensitivity.
- 02 At 5%, a related Lactobacillus Ferment Lysate Filtrate demonstrated potent anti-acne effects, including a 47% reduction in redness in a small *in-vivo* study.
- 03 A 3% inclusion in a ferment mixture led to a statistically significant decrease in skin redness and improved sensitive skin parameters in a clinical study involving 52 participants.
Transparency
Dusting Analysis
Clinical studies and efficacy data consistently demonstrate benefits at meaningful concentrations ranging from 1% to 5%, indicating that this ingredient is not typically used for 'dusting' purposes at negligible levels.
The Formula
Formulation
Stability
The ingredient is generally stable, though related Lactobacillus Ferment ingredients suggest a broader optimal pH range of 3-7. For optimal preservation, it should be stored at room temperature not exceeding 25°C in a tightly sealed container.
Conflicts
- high-pH ingredients
- strong exfoliants
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Lactobacillus Ferment Extract Filtrate, along with closely related ferment derivatives (Lactobacillus Ferment, Lysate, and Lysate Filtrate), are safe for use in cosmetic formulations. While a specific maximum concentration for this exact filtrate is not listed, a related Lactobacillus Ferment has been reported safe at concentrations up to 5.6% in face and neck products. Human Repeat Insult Patch Tests (HRIPTs) on 50-51 subjects have consistently shown it to be non-irritating and non-sensitizing at concentrations up to 100% in products containing related lysates. A minimal risk of allergic reaction exists for extremely sensitive individuals, warranting a patch test if concerns arise.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Lactobacillus Ferment Extract Filtrate is a valuable postbiotic ingredient, offering robust, evidence-backed benefits for modulating the skin microbiome, reinforcing the skin barrier, and providing significant soothing and anti-inflammatory effects for healthier, more resilient skin.
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