Lasts for up to 120 shampoos the ultimate cleanser and refresher for your hair and scalp great for itchy flaky scalp as well as removing sweat salt chlorine and styling products yet fine for everyday use all men u shampoos are anionic which means the hair is left negatively charged the men u daily moisturising conditioner is cationic positively charged opposites attract the optimum amount of conditioner is absorbed and importantly retained without overloading as any excess is washed