Nioxin system 4 scalp revitaliser conditioner is a daily conditioning product that has been designed for use on chemically enhanced or noticeably thinning hair and when used together with the system 4 shampoo will prevent your scalp from becoming dry or irritated after your colour here at fragrance direct our customers are big fans of the nioxin range of hair care products that we have in stock and this nioxin system 4 scalp revitaliser conditioner is sure to become a firm favourite as