Etidronic Acid ●
TL;DR. This ingredient is a chelating agent that binds metal ions such as iron and copper. It helps preserve color, clarity, fragrance stability, and preservative performance, especially in water-rich formulas and soaps.
What does Etidronic Acid do in a cosmetic formula?
This ingredient is a chelating agent that binds metal ions such as iron and copper. It helps preserve color, clarity, fragrance stability, and preservative performance, especially in water-rich formulas and soaps.
Is Etidronic Acid clean?
From a clean beauty perspective, it is usually viewed as functional but not especially clean-leaning because it is a synthetic phosphonate with environmental persistence questions. Skin irritation potential is generally low at typical cosmetic levels.
Is Etidronic Acid sustainable?
This material is synthetically produced and is not readily biodegradable. Its main sustainability concern is persistence in wastewater rather than high direct bioaccumulation.
Is Etidronic Acid COSMOS-approved?
It has limited alignment with COSMOS and Green Chemistry principles, and certification programs generally favor more biodegradable chelators such as citrate, phytate, gluconate, or GLDA-type options. Its synthetic origin and low biodegradability keep it from a stronger green-chemistry profile.
How does Etidronic Acid work chemically?
The molecule is an organophosphonate chelator with multiple acid groups that form stable complexes with trace metal ions. It is typically used at low levels, often around 0.05% to 0.2%, and is stable across a wide pH range, including alkaline soap systems.
Last updated 2026-05-13