hydration via skin

I read the Dr. Christopher recommended for somebody with a blown off jaw to hydrate via soaking in a bath tub of water and feed via olive oil whole body rubs.


I wonder, those who sunbath all day long while dry fasting, how should one use this method of hydration ?

What should be the temperature of the water ?

For how long should one soak in the water ?

How many times per day should one take a soak per day ?