i take a shower daily. i am ocd so i cannot go a day without washing my hair. tis a strong point , despite knowing this i still take showers daily. i have naturally oily hair, so when i go a day without showering it gets more oily and i dislike that, like it feels unclean thus i shower everyday. and showering daily with (warm/hot) water may also not be good for the skin. i think it is best to shower every 2 days.