Ethylene Diamine Tetra Sodium (tetrasodium EDTA) is a chelating agent that binds metal ions in cosmetic formulations, improving product stability, preserving efficacy, and enhancing the performance of preservatives and surfactants. It is used at low concentrations as a functional formulation additive rather than a skin-treatment active.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation | Uncommon | Mild irritation possible, more likely at higher concentrations or on compromised skin. |
Allergic contact dermatitis | Rare | Sensitization to EDTA salts is documented but infrequent. |
Enhanced penetration of other ingredients | Uncommon | As a chelator it may increase skin permeability, potentially amplifying irritation from other components. |
Eye irritation | Rare | Possible with direct contact in concentrated forms. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.