What does a chelating agent in shampoo do?

A chelating agent in shampoo primarily functions to remove product buildup and metals from the hair and scalp. These agents work by binding to metal ions, such as calcium and magnesium, as well as residues from styling products, effectively breaking them down and allowing them to be washed away. This is particularly beneficial for individuals who use hard water, as minerals can accumulate over time and lead to dull, lifeless hair. By incorporating a chelating agent, shampoo not only enhances the cleanliness of the hair but also improves its overall appearance and manageability.