Earlier quoted context omitted.
Do you mean you are just using water nowadays, or did you switch to using detergent or otherkind of cleaning formula?
Just water. My hair is short so I can get away with washing my hair water-only as well, but it becomes a pain for people with long hair (it can become quite unmanageable).
I've been washing my hair with just water, and it works better than I expected. In the past, if I didn't wash my scalp before bed I'd feel itchy and sleep badly, but water seems to do a sufficient job of convincing my brain that I'm clean. When I feel sufficiently gross I use shampoo anyway. Conditioner is required to get a brush through it; my hair is very curly and will form knots if not brushed.
I am not planning on ceasing to use body soap.