Use low or no sulphates and it might help with the dry hair. I only wash my hair with low sulphate shampoo once a week. I cowash my hair once a week too. Using a conditioner with no silicones. Deep conditioner once a week. Dry crunchy hair can be from a few things: 1: too much protein 2: moisture overload (fatigue) 3: sulphates in shampoo. Only problem is you have to play around with it all until you figure out which it is.