Chelating agents (e.g., Tetrasodium EDTA, Tetrasodium Etidronate, Sodium Gluconate) help remove minerals that accumulate in the hair, such as calcium, magnesium, iron, and copper. These minerals come from such sources like hard water, swimming pools, or pollution and can make hair appear dull, coarse, or discolored.

A chelating agent works like a magnet: it attaches to minerals and forms a water-soluble compound with them. As a result minerals are washed away during cleansing. The end result is softer hair, brighter appearance, and better color retention. Chelating agents are especially used in technical products, such as hair dyes, developers, perms, as well as clarifying shampoos and conditioners, to keep hair healthy and beautiful.