>>221755410L water bag with a small tap
Hang it on a tree
Heat up water in a canteen/pot
Pour in
Use soap
Warm shower, full rinse
Go to bed squeaky clean every night
Don't smell like a disgusting ultralighter
Feels good
Morning: warm up pot of water, face scrub, less hassle. Deoderant and gtg
Clothes: waterproof food bag makes for a handy little washing machine. Rub some soap in for a minute, then as many rinse cycles as you need. Essentially [urban] backpacker sink wash for /out/
Dry on a line, can try to use coals to heat the air (not too much) if it's damp out. Socks take forever to dry otherwise. Roast em.
Just don't do this in/near a water source and try to avoid splashing soap all over sensitive stuff. I do #minimaltrace rather than #notrace since I do public lands and am not convinced small quantities of soap are going to create an ecological hazmat site.