An extract of white oak bark, used as an astringent and skin-conditioning ingredient.
What it is
Quercus alba bark extract is an extract of the bark of the white oak, Quercus alba, of the beech family (Fagaceae). CosIng lists it as an astringent and skin-conditioning ingredient.
Where it is used
Found in a small number of products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
The INCI name does not reveal the extraction method or solvent.
Functions
- Astringent
- Contracting and/or tightening the skin.
- Skin conditioning
- Maintaining the skin in good condition.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

