I have known people through my life that have to take a shower after they poop, no matter what and they will wait to go until they can be home to shower. The neurosis is real.
As a farmer I have always gone by if I have been working or not. The winter days where I am not getting dirty and am bundled up in clothes I will go days between showers. During the summer I HAVE to shower daily.
As an eczema sufferer for most of my life the more frequent the showers the less natural oils I had on my skin but the more I was moisturizing after the showers. Now that we are spa owners showers have become mandatory daily to maintain the water quality and after cutting dairy I have no eczema.