Science
Mechanism of Action
Diospyros Kaki Fruit Extract acts as a robust antioxidant, leveraging its high concentration of phenolic compounds, carotenoids, flavonoids, and vitamins A and C to neutralize free radicals. This action mitigates damage from environmental stressors like UV radiation and pollution, demonstrating photoprotective capabilities by reducing UV-induced intracellular reactive oxygen species (ROS). It supports skin health by nourishing, hydrating, and improving overall texture and elasticity. Furthermore, it exhibits soothing properties to calm sensitive skin, subtle astringent effects to help regulate sebum and refine pores, and antibacterial qualities that can assist in managing skin imperfections. It also promotes skin regeneration and shows potential for skin brightening through melanin inhibition, alongside anti-inflammatory benefits.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 In HaCaT keratinocyte cells, the extract significantly reduced UV-induced intracellular reactive oxygen species (ROS) production, demonstrating photoprotective and regenerative effects at concentrations between 10-200 µg/mL.
- 02 An in vitro coculture system with mouse myoblast C2C12 and Caco-2 cells showed the extract, at 0.5 mg/mL, diminished oxidative stress-induced decline in cell viability, suggesting its potential to stimulate intestinal epithelial cells to secrete compounds that reduce oxidative stress.
- 03 A patented cosmetic composition containing a nanoliposome-stabilized extract (0.1-30.0%) demonstrated efficacy in skin whitening, wrinkle improvement, and irritation relief, along with excellent formulation stability and skin permeability.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
The phenolic compounds within the extract have a large molecular weight and inherent instability. Stability can be optimized through the use of carriers like phytosomes, with phytosome-loaded extracts demonstrating enhanced antioxidant activity over six months compared to free extract. The fruit's pulp naturally has a pH of approximately 6.47 ± 0.03. Due to its high antioxidant content, the extract is susceptible to degradation from light and heat; therefore, it should be stored in light- and air-proof packaging and away from warm environments.
Safety
Safety Profile
Generally recognized as safe for cosmetic use, with regulatory approval in regions such as Europe. Serious side effects are rarely reported. However, individuals with sensitive skin may experience allergic reactions or sensitivities, making a prior skin test advisable. EWG Skin Deep classifies it as 'Restricted' for EWG VERIFIED products without adequate substantiation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Diospyros Kaki Fruit is a valuable ingredient, offering broad antioxidant protection, photoprotective benefits, and soothing properties suitable for all skin types, with low irritancy and comedogenicity.
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References
Sources