There are several ways to stay clean in the van. None will be as quick or easy as hopping in the shower in a home or apartment.
While possible, it is extremely difficult to squeeze a practical in-vehicle shower into a van. The amount of space they take up, along with the very large amounts of water (and wastewater) storage required makes it difficult in even the largest of vans. Dwellers who want regular access to an interior shower are better served by Class C and larger vehicles, as they have the space and water tank capacity to make regular showers a reality.
Folks in vans do have some shower options, although expectations may need to be adjusted.
Regardless of the type of shower, water conservation is key. With practice, a navy shower can take ⇐ 1 gallon of water. Shower bags have valves to facilitate navy showers.
The easiest way to get long, hot showers is to have a gym membership. The most common amoung 'dwellers is the Planet Fitness “black card” membership, since it allows use of any PF nationwide.
A sink bath is very simple. Put some water in a sink or large-ish container2) and use it to wet and rise a washrag, scrubber, or sponge. Wash a small area, wet and wring the rag, repeat. Soap is not required for this process. If you do you soap, consider having a seperate bowl for rinse water.
When using single containers for baths, consider using the army procedure:
The washwater can be used to rinse pee bottles, etc.
Baby wipes are relatively inexpensive and available everywhere. They are particularly useful for quick “pits and bits” touch-ups.
Wipes are also useful for folks in very small spaces3), since it doesn't require large, open containers of water.
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