Shampooing your hair everyday is actually not healthy for the average person. Its basically a way to sell more shampoo. The scalp produces natural oils that are good for the scalp and the hair. It will build up over time, 2 to 3 days roughly speaking, and that is when your average persons hair is dirty. Shampooing everyday strips your hair and scalp of these oils, drying out the scalp, causing itchiness, dry hair which is prone to splitting, breaking, and frizziness. Only exceptions are those who have excessively oily skin or perhaps have 'dirty' jobs. Its best to shampoo every 2 to 3 days. I often just use conditioner on days im not shampooing. On a side note, treseme is the best store brand out there. Avoid brands like pantene and fructis, they arent good for your hair.View Thread