Cosmetic manufacturers frequently use this ingredient for a variety purposes. It primarily works as a preservative, chelator and stabilizer, but has also been shown to enhance the foaming and cleaning capabilities of a cosmetic solution. As a metal chelator, it counteracts the adverse effects of hard water by binding with heavy metal ions contained in tap water, which in turn prevents the metals from being deposited onto the skin, hair and scalp. This makes it a particularly useful ingredient for rinse-off products that inherently require water to come into contact with the skin.
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