Tannic Acid ●
TL;DR. This ingredient is used mainly as an astringent, antioxidant, and metal-binding agent. In skin and hair care, it can help tighten the feel of tissue, reduce formula discoloration from metals, and support antioxidant claims.
What does Tannic Acid do in a cosmetic formula?
This ingredient is used mainly as an astringent, antioxidant, and metal-binding agent. In skin and hair care, it can help tighten the feel of tissue, reduce formula discoloration from metals, and support antioxidant claims.
Is Tannic Acid clean?
From a clean-beauty perspective, this ingredient is generally well accepted and is not a common restricted-list concern. Its main caveat is concentration, since its strong astringency can feel drying or irritating on sensitive skin at higher use levels.
Is Tannic Acid sustainable?
This material is typically plant-derived from bark, leaves, or galls and is readily compatible with renewable sourcing. It is expected to biodegrade more readily than persistent synthetic film-formers, although sourcing quality depends on the specific botanical supply chain.
Is Tannic Acid COSMOS-approved?
It is generally compatible with COSMOS-natural and COSMOS-organic frameworks when sourced and processed with permitted extraction methods. Its Green Chemistry profile is favorable when made from renewable plant material using water or ethanol-based extraction and minimal solvent burden.
How does Tannic Acid work chemically?
The molecule is a high-molecular-weight plant polyphenol, usually a mixture of glucose esters carrying multiple phenolic acid units, which gives it strong protein-binding and metal-chelating behavior. It is water soluble, performs best in mildly acidic formulas, and can darken or lose activity with oxidation, metal contamination, or strongly alkaline pH.
Last updated 2026-05-14