Science
Mechanism of Action
Functioning as a probiotic, this ingredient harmonizes the skin's microflora, thereby fortifying the natural protective barrier and creating an environment less conducive to harmful bacteria and fungi. This action effectively reduces irritation and improves the skin's resistance to environmental aggressors. It delivers comprehensive moisturizing and hydrating benefits by replenishing vital substances such as amino acids, peptides, and vitamins, which boosts nourishment and visibly diminishes dry lines and wrinkles. The ingredient also possesses soothing properties, reducing redness and mitigating signs of aging. The fermentation process significantly enhances nutrient bioavailability and generates antioxidant secondary metabolites, offering robust protection against free-radical damage. Furthermore, it promotes cellular renewal and improves skin elasticity, with in-vitro studies indicating its potential to stimulate collagen production and ATP synthesis. Its antimicrobial capabilities may aid in defending against fungal and bacterial acne by rebalancing the skin's microbiome and normalizing sebum production, while also contributing to skin brightening through a reduction in melanin index.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 An 8-week ingestible clinical pilot trial involving premenopausal women showed that daily oral intake of fermented soymilk improved various skin conditions, including overall satisfaction, dryness, moisture, elasticity, and pigmentation, alongside beneficial modifications to gut microbiota. While direct skin improvement was not significantly different from unfermented soymilk, changes in gut microbiota were observed.
- 02 Topical application of a moisturizer containing Lactobacillus ferment resulted in 100% participant agreement that skin felt more plump. A cleanser formulated with Lactobacillus ferment also demonstrated 100% effectiveness in removing makeup and sunscreen.
- 03 Cosmetic compositions incorporating fermented milk-cream broth from lactic acid bacteria (including Lactococcus and Lactobacillus species) have been shown to reduce skin roughness, enhance flexibility and elasticity, improve the appearance of wrinkles, increase water and oil retention, and contribute to skin whitening by decreasing the melanin index.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient, being a fermentation product, typically maintains an acidic pH, optimally between 4.5 and 5.0, which contributes to its inherent stability. While Lactobacillus ferment can extend cosmetic product shelf life by inhibiting harmful bacteria or fungi, a comprehensive and effective preservation system may require complementary strategies such as precise pH control or the inclusion of co-preservatives.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has thoroughly evaluated Lactobacillus Ferment and related derivatives, including Lactobacillus/Soybean Ferment Extract, confirming their safety for use in cosmetic formulations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This multi-faceted fermented ingredient offers significant benefits across various skin concerns, from microbiome balancing and deep hydration to anti-aging and brightening, all supported by a favorable safety profile.
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