Science
Mechanism of Action
This ferment filtrate exerts its effects by leveraging a concentrated phytochemical profile, including carotenoids, proanthocyanidins, phenolic compounds, and vitamins, intensified by the fermentation of Diospyros kaki. It functions as a significant antioxidant, actively reducing intracellular Reactive Oxygen Species (ROS) to protect against oxidative stress. Furthermore, it demonstrates inhibitory activity against tyrosinase for skin brightening, and elastase and collagenase enzymes, which contribute to improved skin elasticity and the reduction of wrinkle depth. The ingredient also provides anti-inflammatory, antiallergic, and photo-protective qualities, while precisely regulating sebum content and visibly diminishing the size and number of skin pores.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Although a specific optimal pH range for cosmetic formulation stability is not explicitly documented, the presence of Acetobacter bacteria in its fermentation suggests this ingredient is likely stable and effective within acidic environments, comparable to the pH range (around 3.64%) characteristic of persimmon vinegar.
Safety
Safety Profile
There is currently no dedicated safety assessment from the Cosmetic Ingredient Review (CIR) or Scientific Committee on Consumer Safety (SCCS) specifically for ACETOBACTER/BACILLUS/DIOSPYROS KAKI FRUIT FERMENT FILTRATE. The FDA status is also not explicitly available. However, the CIR Expert Panel has reviewed related categories such as 'Lactobacillus Ferment Ingredients' and some 'Yeast-Derived Ingredients,' deeming many safe for cosmetic use. Acetobacter and Bacillus microorganisms are widely utilized in food production (e.g., vinegar), suggesting a generally recognized safety profile for their fermentative byproducts.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While general research suggests significant potential benefits from fermented persimmon, specific clinical efficacy data at defined concentrations and a dedicated safety review for this exact ingredient combination are currently insufficient to provide a precise recommendation.
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