Sophora Angustifolia Root Extract Good Antioxidant Anti-Ageing Dark Spot Fading Sophora Angustifolia Root Extract at a glance Root extract of a plant known as Chinese sophora and ku shen Good source of antioxidants Research shows it can fight dark spots + discolorations May work on skin in a manner similar to hydroquinone Sophora Angustifolia Root Extract description _Sophora angustifolia_ root extract is the extract of the roots of a plant known as Chinese sophora. Also known as ku shen (a name also associated with the related Sophora flavescens plant), it has long been used in traditional Chinese medicine. _Sophora angustifolia_ root extract, like all plant extracts, has antioxidant benefits; however, the most exciting news is research showing it could be another addition to the arsenal of ingredients that can reduce the appearance of dark spots and discolorations. Studies have shown that this root extract has the potential to inhibit excess melanin production in a method similar to hydroquinone. More clinical trials are needed to firmly establish this benefit, but its potential makes it an ingredient to watch. Usage levels of _Sophora angustifolium_ root extract range from 0.04–1%. It’s supplied as a liquid or a powder, both forms being water soluble.