I am using head and shoulders anti dandruff shampoo past 15 years. I used it every day without any doubt and it also taken care of my hair. Somebody told me that you never use this shampoo daily basis but I didn't hear anything, in past 15years I never seen any dandruff, any hairfall nothing. I am going to use this shampoo whole my life. So if you are using head and shoulders, use it blindly it will never break your trust.