Sophora Angustifolia Root Extract



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.

Sophora Angustifolia Root Extract references

  • Experimental Dermatology, January 2013, pages 67-69

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.