System 3 Cleanser Shampoo by NIOXIN is designed to remove oil and debris such as sebum, fatty acids and environmental residue which can block hair follicles. It gently removes product build up, clearing nutrient pathways to your scalp and hair follicle sites without stripping hair of essential oils. Contains cystine amino acids and lightweight conditioning and treatment ingredients. Helps provide thicker-looking hair by increasing the fullness of each hair strand, reducing hair loss by strengthening against damage and breakage. White tea extract, peppermint oil and cleansing agents provide a refreshed scalp environment and healthy shine to natural hair.