Why is disodium EDTA added to cosmetics?

Disodium EDTA, also known as Ethylenediaminetetraacetic acid disodium salt, is a high-performance metal ion chelating agent and a common additive in cosmetic formulations. It precisely captures and binds to metal ions such as calcium, magnesium, copper, and iron introduced into water and raw materials, preventing these ions from causing oxidation, discoloration, or turbidity in skincare and makeup products. Simultaneously, it enhances the effectiveness of preservative systems, reduces the risk of product spoilage, makes cosmetics more stable and durable, extends their shelf life, and is gentle and safe for the skin when added in compliant amounts, without causing irritation to normal skin.

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