Nioxin System 4 Cleanser is specifically designed for fine, chemically treated hair that is noticeably thinning. This professional-grade shampoo utilizes Pro-Color Shield technology to effectively cleanse the scalp and hair, removing sebum, fatty acids, and environmental residues. With regular use, it helps to thicken and add fullness to dry, damaged hair, promoting a healthier scalp environment. Infused with nourishing botanicals and antioxidants, this shampoo not only cleanses but also revitalizes the scalp, improving overall hair health and appearance. Experience visible results in just 30 days with this clinically tested formula.