Quercus Robur (Oak) Root Extract
Reviewed by Emma · Last updated 18 Aug 2026
Also known as: Quercus, Quercus robur
Plant-derived ingredient taken from the English oak tree | Can help protect skin from external aggressors
Addresses
EWG Safety Score
What Is Quercus Robur (Oak) Root Extract?
Quercus robur (oak) root extract is a plant-derived skin care ingredient taken from English oak trees used for its antioxidant and astringent properties. This oak tree’s root extract contains flavonoids and phenolic compounds, both of which have antioxidant benefits, helping protect skin from pro-aging environmental aggressors, like pollution, that cause damage. However, this extract also contains tannins, a group of powerful antioxidants that also denature the proteins on skin’s surface, which can lead to a compromised skin barrier. Please note, this extract differs from the more researched Quercus robur (oak) bark extract as it’s derived from different parts of the same tree. This ingredient isn’t usually used alone, but within ingredient blends.
Clinical Evidence & References
Published Research
-
Phytochemistry Reviews, July 2020, pages 1,379-1,426 [https://link.springer.com/article/10.1007/s11101-020-09707-3]
-
Records of Natural Products, January 2017, pages 205-210 [https://www.acgpubs.org/article/records-of-natural-products/records-of-natural-products-11-2-205-210]
Frequently Asked Questions
From the Clinic
Not sure what your skin actually needs?
Two minutes, a few questions, and we’ll point you at what matters — no guesswork.
Take the skin quizOther forms of Quercus Robur (Oak) Root Extract
These appear on ingredients lists under different names but are the same substance. Quercus Robur (Oak) Root Extract is the common form.
Related Ingredients
Quercus Robur Bark Extract
A tannin-rich plant extract with astringent and traditionally purifying properties
Ptychopetalum Olacoides Bark/Stem Extract
From a plant known as muira puama | Native to the Amazon rainforest
Pyrus Communis (Pear) Fruit Extract
Fruit from the common pear tree | Has antioxidant properties
Pyrus Malus Fruit Water
Apple fruit water with antioxidant properties, primarily used for fragrance in skincare
Quillaja Saponaria Root Extract
Plant-derived extract that conditions skin and helps formulations perform effectively
Raphanus Sativus Root Extract
Derived from radishes | High in antioxidant-rich phenolic compounds
Learn More About Skincare Ingredients
Explore our comprehensive ingredient glossary to understand what's in your products.
Browse All IngredientsShop Our Products
Find professional skincare solutions at Skintique.