對肌膚低刺激性，多半吸附在角質層，高度水溶性，無大量殘留機會(取自張麗卿 博客分享)
為有機金屬離子螯合劑(對鈣鎂離子有較強的螯合作用)
因與金屬離子螯合，致使細菌不能獲得生長發育所必需的微量金屬離子，故有抑菌作用，也可作抗菌增效劑。多半用於清潔產品當螯合劑
Prevents ingredients in a formula from binding with trace elements. Safe if used in cosmetics
In skincare, this helps to prevent cosmetic formulations and other personal care products, such as lotions and creams, from deteriorating. Disodium EDTA protects the integrity of skincare products from undergoing unwanted consistency changes, pH changes, odor changes, or texture changes.
https://www.lorealparisusa.com/ingredient-library/disodium-edta.aspx