Disodium EDTA, Ethylenediaminetetraacetic acid is a molecule which complexes metal ions in aqueous environments. It is available in four neutralizations, two of which, Disodium EDTA and Tetrasodium EDTA, are commonly used in cosmetics. Generally, the choice of which product to use is determined by the intended pH of your product. Disodium EDTA is commonly used in neutral to mildly acidic products, like most creams, lotions, and neutral pH liquid soaps and shampoos. Disodium EDTA catalyzes metal ions, which can be present in any water-based system. These metal ions can react with formulation ingredients causing problems, including:
Spoilage and rancidity
Degradation of vitamins and essential fatty acids
Fragrance degradation,
Discoloration
Haze formation and precipitation
Poor foaming and rinsability performance.
Disodium EDTA also works synergistically with your preservative to improve preservative efficacy. Inci Name : Disodium EDTA