In a culture where water is scarce, as in the MidEast, other methods of personal hygiene develop and become adopted as normal.
If you had only 1 qt. h2o per day, do you drink it?or bath with it?
Cleaning your whole body with a rag dipped in 2 Tablespoons oliveoil might be cheaper and more benificial in hot arid weather.
If you find that complexion and beauty are enhanced by comparison to water bathers, do you adapt?
In a culture where flies are epidemic around food. Do you NOT EAT? Or do you take precautions using medicinal herbs in your food to kill parasitic elements(ie, fenengreek, turmeric, coriander)? If you eat so much of it, that it sweats out your skin in a musky way, do you chance a tapeworm?