Sophora Japonica Root Extract
INCI: SOPHORA JAPONICA ROOT EXTRACT
Reviewed by Daisy · Last updated 14 Aug 2026
A plant extract with antioxidant properties to help protect and support skin
Best For Skin Types
All, Sensitive, Combination
Addresses
Usage Frequency
Daily
What Is Sophora Japonica Root Extract?
Sophora japonica root extract is derived from the roots of the Japanese pagoda tree (Sophora japonica), a plant native to East Asia with a long history in traditional medicine. The extract contains flavonoids and other polyphenolic compounds that contribute to its skincare applications.
In cosmetic formulations, this ingredient is primarily used for its skin-protecting properties. It functions as an antioxidant, helping to defend the skin against environmental stressors and oxidative damage that can compromise skin condition over time.
How It Works
The extract works primarily through its antioxidant compounds, which interact with free radicals—unstable molecules generated by UV exposure, pollution, and natural metabolic processes. By neutralising these free radicals, the ingredient helps prevent oxidative stress, which can accelerate visible signs of ageing and compromise skin barrier function.
Additionally, the flavonoids present in Sophora japonica root extract may help support the skin's inflammatory response, potentially contributing to a calmer, more balanced complexion.
Clinical Evidence & References
Research specifically on Sophora japonica root extract in skincare is limited. Most evidence comes from traditional use and in vitro studies demonstrating the antioxidant capacity of its flavonoid content. These laboratory studies suggest protective potential, though evidence in human skin is sparse.
The ingredient is generally recognised as safe in cosmetic use and appears well-tolerated, but more clinical studies on human skin would strengthen confidence in its specific benefits and optimal concentration ranges.
How to Use
This ingredient is typically incorporated into serums, toners, and creams as part of a broader antioxidant strategy. It works well in combination with other protective ingredients such as vitamin C, vitamin E, or niacinamide. Apply as directed within your routine; there are no particular timing considerations, though using it morning and evening would provide consistent antioxidant support.
Safety & Precautions
Frequently Asked Questions
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Sophora Japonica Root Extract is a variant of Sophora Japonica Flower Extract, the form you will most often see on an ingredients list.
A traditional botanical extract with emerging evidence for UV and oxidative stress protection
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