Science
Mechanism of Action
The ingredient synergistically blends the bioactives from Magnolia officinalis bark with those generated during Lactobacillus and Saccharomyces fermentation. Magnolia bark extract, rich in honokiol and magnolol, functions as a powerful antioxidant, mitigating oxidative stress and combating premature aging. It also exhibits robust anti-inflammatory effects, effectively calming redness and irritation, and broad-spectrum antimicrobial activity against skin pathogens like Staphylococcus aureus and Cutibacterium acnes. Furthermore, it restores mitochondrial function, reduces reactive oxygen species (ROS), and activates mitophagy, enhancing skin's natural repair processes. The fermentation process amplifies these antioxidant benefits and increases the bioavailability of key compounds. Lactobacillus ferment specifically acts as a DNA repair enzyme, fortifies skin defense against environmental aggressors, and provides additional antimicrobial and anti-inflammatory support, fostering a balanced and resilient skin microflora.
Research
Clinical Evidence
High confidence0.05%
Key findings
- 01 Magnolia officinalis bark extract effectively inhibits the growth of various microorganisms, including gram-positive bacteria, yeast, mould, Staphylococcus aureus, and Candida albicans, demonstrating potent antimicrobial action.
- 02 In clinical applications, Magnolia officinalis bark extract at this concentration improved skin elasticity by 3.76% and enhanced skin tone brightness by 0.76%. In vitro studies also showed significant antioxidant effects, reduced mitochondrial ROS production, and increased autophagy flux, vital for cellular rejuvenation. Furthermore, it demonstrated a 12.73% reduction in the mean depth and roughness of neck wrinkles.
- 03 Lactobacillus ferment contributes to reducing skin sensitivity.
- 04 Lactobacillus ferment has shown effectiveness in the treatment of acne.
Transparency
Dusting Analysis
While some benefits, such as antimicrobial activity (from 0.02%) and anti-aging effects (from 0.05% of Magnolia bark extract), are observed at relatively low concentrations and are considered effective, higher concentrations (e.g., 1-5%) of the Lactobacillus component are specifically required for benefits like reducing skin sensitivity or treating acne. Therefore, concentrations below 0.02% would likely not provide meaningful clinical efficacy.
The Formula
Formulation
Stability
The stability of the active components, Honokiol and Magnolol from Magnolia bark, is pH-dependent. Honokiol is less stable at neutral to alkaline pH, while Magnolol exhibits lower solubility in acidic conditions but higher solubility in alkaline environments. Encapsulation, particularly in liposomes, can enhance Honokiol's stability, especially at alkaline pH. An overall optimal pH range for the combined ferment extract is not specified, necessitating careful consideration of these individual component stabilities during formulation.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Lactobacillus Ferment and related ingredients safe for cosmetic use, with reported concentrations up to 5.6%. Magnolia Officinalis Bark Extract is generally well-tolerated; however, reports indicate a moderate risk of skin sensitization in some individuals at topical concentrations between 0.05% and 0.5%, with the precise cause unknown. Formulators should also be aware that Lactobacillus Ferment possesses tyrosinase-inhibiting properties, which could lead to a skin lightening effect, and should be used to avoid unintended depigmentation. While individual components have been assessed, no specific safety review for the exact combined ferment extract was identified.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This multifaceted ingredient offers significant benefits across anti-aging, soothing, and antimicrobial categories, making it a valuable addition to precision skincare formulations, provided sensitivity and potential lightening effects are carefully managed.
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