Science
Mechanism of Action
Acting primarily through its Lactobacillus ferment component, this ingredient exhibits potent antimicrobial properties, effectively inhibiting the proliferation of harmful bacteria and fungi on the skin's surface. It contributes to a balanced skin microflora, fostering an environment where beneficial bacteria thrive. Rich in vital vitamins and minerals, it actively nourishes and hydrates the skin while stimulating the production of beta-defensins, integral components of the skin's natural immune defense. It also possesses anti-inflammatory capabilities, aids in DNA repair, and provides protection against environmental stressors. While related Lactobacillus ferments may show tyrosinase inhibition, this effect is considered a drug claim and should not be observed in cosmetic applications.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Lactobacillus ferment demonstrated anti-acne effects.
- 02 Lactobacillus ferment was observed to reduce skin sensitivity.
- 03 A Lactobacillus solution significantly reduced both inflamed and non-inflamed acne lesions over a six-week period.
- 04 Lactobacillus Ferment (Lactobacillus plantarum) reduced skin sensitivity over two months by mitigating lactic acid stinging.
Transparency
Dusting Analysis
No data is available regarding dusting or specific dusting thresholds for this ingredient.
The Formula
Formulation
Stability
This ingredient, being water-soluble, integrates seamlessly into water-based formulations or the water phase of emulsions. For optimal stability, it is recommended to incorporate it during the cooling phase, ensuring temperatures remain below 70°C (158°F), and ideally before adding thickening agents such as xanthan gum or Carbopol Ultrez 10. Products utilizing this ingredient, particularly when leveraged for preservative benefits, should undergo challenge testing to confirm antimicrobial efficacy and may benefit from co-preservatives or pH control for a robust preservation system.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Lactobacillus Ferment and related ingredients safe for cosmetic use at current concentrations. The Panel specifically noted that any potential skin-lightening effect, achieved through tyrosinase inhibition, is considered a drug effect and should not occur in cosmetic products. The highest reported concentration for the broader Lactobacillus Ferment category in makeup bases was 1.5%. While this specific ingredient contains a 'type of sulfate,' its overall safety for cosmetic application aligns with MoCRA requirements.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This ingredient is a valuable addition to precision skincare, offering scientifically-backed antimicrobial, anti-acne, and skin-soothing benefits while supporting a healthy microbiome.
Related
Similar Ingredients
Finding similar ingredients…