Taking head bath gives me a refreshed feeling and even if lacking overnight sleep a full bath makes me feel refreshed.
My mother was using Shikakai, gram flour, and other herbal items for hair washing and so I was also using them. But after moving away from native place, I was using the same bath soap for hair also and then shifted to hair shampoo as someone told me soap was harmful for hair.
Knowledge is power.
In our house, we use hot water only for baths. Even in summer, we go for a hot water bath only. Once we had a bath with hot water we feel relaxed and we will have a pleasant mind. Somehow I am not very comfortable with a normal waterbath. Some people avoid taking bath when they are sick. But my habit is to take bath even though I am sick but I will not go for a head bath on such days.