Recently I sat in on a group of preppers/homesteaders, some of whom have become independent from “The Grid”. The subject of bathing came up with a variety of solutions that had been employed. One person had traveled extensively and mentioned that during a recent trip to Ghana they lived in conditions that provided only 1 hour of electricity a day with no running water. The living conditions there were sparse by our standards here but it was “life as usual” to the locals. Their bathing solution was using a 2 liter bottle of water for their shower. This simplicity could be employed here during a natural disaster when water supplies may be limited.
You may be familiar with the terms “Navy Shower”, “Sponge Bath” or “Stitz Bath”. These are methods of bathing where minimal water is used due to limited resources or facilities. Areas on your body that require cleansing are first wet or moistened to loosen dirt or accumulated perspiration. This loosens and dilutes dry material and enables soap to be effective when lathered and subsequently rinsed or wiped off. Although limited in quantity, hand wipes or baby wipes can be useful in the short term.
For those who travel abroad, it becomes apparent that bathing and hygiene vary greatly and are largely a cultural phenomenon. American Industries have effectively promoted their products and have helped to create a fragrant society. European countries lean toward a more humanistic natural presence. Third World countries may be even more relaxed.
Some considerations about frequency of bathing would relate to whether you are solitary or live in the company of others, and whether your environment is healthy or hazardous.