Rosewater can be used for any hair/skin formulation that requires water. I use mine to mix with french green clay for facials and for toning my skin. In a spray bottle, I use it with conditioner to wet hair. Sometimes, I use it to spray the room to make it smell fresher. When it's hot, I spray it on my face and neck to feel cooler (and smell good).
If you like such things (and we do) you can use it in the kitchen as well. Both rose reptals and hips are edible.