Who wrote this?? I too, couldn't go without washing my hair or using shower gel i'm afraid. And i would use bi-carb but if needed i would use toothpaste or mouthwash, especially if i had an appointment. I'm not prepared to be embarrassed by people backing away, as another poster said.
I would try to shower etc as little as possible, and wouldn't bother if i was just at home, but going visiting or anything, i would just have to.
Also keeping the skin clean for detoxifying through, i would also think that was good.