I shower my hair every other day, and from those days, i also alternate every other shower with shampoo, and use conditioner in every shower, but never on the scalp.
Just a quick note if anyone cares: Shampoo should not be used every time you shower, especially if you shower every day, and more importantly if your shampoo contains Sodium Laureth Sulfate (or any of its names in disguise). That ingredient is something that should be avoided when choosing a shampoo, as it washes off your natural oils from your hair. ... and * Conditioner should never be applied to the scalp.
I only use conditioner every 3rd or so wash. Saves money (I use bio lage from ulta, gotta save some how. Lol) and really it does a decent enough job to not need it every time I wash my hair. Kind of like my straitening serum. I use it on my bangs to not have to use so much heat all the time and I only have to use it maybe once a week. It's so worth it to spend more and use less time, effort, and product!