Because our hair regiments aren’t a “one size fits all” type of situation, the consistency of our shampoo days can vary. The conditions of our hair and scalp can act as a barometer to let us know when or how often we should shampoo our hair.  If your hair is naturally oily this could  mean that you have over active sebacious glands which causes your hair to secrete more sebum (oil). And as a result the hair shaft becomes lifeless and weighed down. If this is your issue I would suggest shampooing your hair at least once a week to maintain a clear scalp and to keep your hair flowing in the wind.