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Moumoujus

LACTIC YEASTS.

Valuable CAS 68876-77-7 / NOT REPORTED

Lactic Yeasts, encompassing fermented lysates and filtrates from Saccharomyces (yeast) and Lactobacillus (lactic acid bacteria), deliver a rich array of beneficial compounds including amino acids, peptides, and beta-glucans. These ingredients are adept at enhancing skin hydration, reinforcing the skin barrier, and supporting overall cellular vitality for a rejuvenated complexion.

Summary

Moisturizer/Humectant Antioxidant Skin-identical ingredient Soothing Skin conditioning Skin protecting

Science

Mechanism of Action

Operating through multifaceted pathways, Lactic Yeasts function as potent humectants, actively drawing and retaining moisture to significantly boost skin hydration and fortify the natural skin barrier. They stimulate the skin's intrinsic renewal processes, promoting cell turnover and supporting collagen production to diminish fine lines and enhance skin elasticity. As antioxidants, they expertly neutralize free radicals, offering robust protection against environmental damage. Moreover, these ingredients can elevate cellular energy (ATP) production and oxygen uptake within skin cells. Specifically, Lactobacillus ferment lysates are key in nurturing a balanced skin microbiome, modulating immune responses to reduce redness and irritation, and accelerating healing through antimicrobial peptides. They also improve the bioavailability of other active ingredients.

Research

Clinical Evidence

High confidence
Effective range 0.1–10%
Optimal

0.1%-5%

Key findings

  1. 01 Formulations incorporating Lactobacillus Ferment Lysate effectively decreased transepidermal water loss (TEWL), reduced facial redness, and significantly improved skin hydration.
  2. 02 A lysate derived from Lactobacillus delbrueckii subsp. bulgaricus LB86, applied in a cream base, markedly increased dermal hydration levels compared to a control formulation.
  3. 03 A blend of yeast extract and Mannitol (Regenacell™) demonstrated a stimulation of cell growth by up to 47% and an improvement in oxygen uptake by up to 45%.
  4. 04 Saccharomyces Ferment Filtrate is recommended for use in leave-on products within a concentration range of 0.1% to 5% for optimal efficacy.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.1%
Red flag below
0.1%

Lactic Yeasts, specifically Saccharomyces Ferment Filtrate, are recommended at concentrations of 0.1% to 5% for effective use in leave-on skincare products. Formulations claiming benefits from this ingredient at concentrations below 0.1% may be considered under-dosed and potentially insufficient to deliver the full spectrum of advertised benefits.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Lactobacillus Ferment Lysate maintains optimal stability when stored between 23-25°C, with a permissible range of 16-32°C, and should not be frozen. While a specific optimal pH for formulated products is not explicitly stated, fermentation processes often occur within a pH range of 3.5-4.5.

Synergies

  • Enhances the bioavailability of other active ingredients in a formulation.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Sensitization risk Low

The Lactobacillus genus is non-pathogenic, and multiple strains of lactic acid bacteria have been tested at 100% concentration, demonstrating no skin or eye irritation. Saccharomyces Ferment Filtrate is recognized as a safe cosmetic ingredient with no reported side effects. A patch test is advisable prior to full usage, particularly when using higher concentrations.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Lactic Yeasts are a valuable and versatile ingredient, offering significant, scientifically-backed benefits for hydration, barrier integrity, anti-aging, and soothing across all skin types with a low risk of irritation.

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