Nioxin Hair Care System 6 for chemically treated hair, such as bleached, straightened or relaxed with progressed thinning amplifies hair structure and protects against hair breakage. This unique set of three professional hair products, based on an advanced skin care approach, is specially formulated as a hair thickening treatment, delivering smoothness and hydrated hair. The Nioxin System 6 regimen reduces hair fall due to breakage, strengthens the hair and delivers a healthy shine to chemically treated hair, while refreshes the scalp. Nioxin Cleanser Shampoo removes dirt, excessive oil and other environmental residues from the scalp and hair.