Quercus Alba Bark Extract ●
TL;DR. This ingredient is used mainly as an astringent and skin-conditioning botanical extract, helping give formulas a toning feel and supporting antioxidant claims from its polyphenol content.
What does Quercus Alba Bark Extract do in a cosmetic formula?
This ingredient is used mainly as an astringent and skin-conditioning botanical extract, helping give formulas a toning feel and supporting antioxidant claims from its polyphenol content.
Is Quercus Alba Bark Extract clean?
From a clean beauty perspective, it is generally uncontroversial and not a common restricted-list ingredient. The main formulation caveat is that tannin-rich extracts can feel drying or reactive on very sensitive skin at higher levels.
Is Quercus Alba Bark Extract sustainable?
This material is plant-derived and expected to be biodegradable, with a lighter end-of-life profile than persistent synthetics. Its sustainability depends on responsible sourcing, since harvesting from woody plant material should be tied to managed forestry or verified supply chains.
Is Quercus Alba Bark Extract COSMOS-approved?
It is generally permitted under COSMOS-natural and COSMOS-organic when the botanical raw material and extraction solvents meet the standard, such as water, ethanol, glycerin, or other allowed solvents. It fits Green Chemistry best when sourced renewably and processed with simple, low-residue extraction methods.
How does Quercus Alba Bark Extract work chemically?
The molecule profile is not a single compound, but a mixture rich in tannins, flavonoids, and other phenolic constituents that can bind proteins and contribute an astringent skin feel. Typical use levels for botanical extracts are often about 0.1 to 5%, and the polyphenols can darken or oxidize over time, especially with heat, light, oxygen, or metal ions.
Last updated 2026-05-13