This shampoo is packed with ingredients. A chelating agent removes hard water mineral buildup, an anionic polymer removes product buildup and a gentle surfactant removes pollution particle buildup. Activated charcoal absorbs oil from scalp and hair. The scalp moisturizing and soothing complex with witch hazel helps moisturize the scalp. Ideal for all hair types. Color safe and safe for chemically treated hair. Customize usage depending on the degree of your hard water. For hard water buildup removal, leave on for 1-2 minutes before rinsing.