Say you're stealth camping for several days straight, which is not something I've done - yet. You don't have a shower, you don't pass a handy river or laundrette/washeteria, and you run out of clean cycling clothes. When I wear yesterday's cycling gear it's agony, especially in a warm climate - the dried salt from yesterday's sweat makes them itch so much. And the smell's not great. Plus such bad hygiene between your legs invites some nasty health problems.
So I've been thinking about strategies for dealing with this. In fact I've been having a bit of a brainstorm. Here are my untested (and quite possibly moronic) ideas:
(1) fill my 8 litres worth of water containers the usual way (begging) and rinse the sweat out of my clothes in a plastic bag. Put 2 litres of water in the bag, wring them out and repeat.
(2) put zinc-based cream (either nappy/diaper rash cream or certain brands of sunblock) on my body to defeat the itching and chafing from the salt. (I carry this kind of cream anyway because when I cycle for 10 hours a day in sweat-soaked shorts I get truly horrible chafing on my unmentionables. A pharmacist advised zinc-based cream and it works superbly.)
(3) buy a shower head attachment for my 5 litre Ortlieb water sack, stand under it and shower with my clothes on. (how long will the 5 litres last? will it be enough to get the sweat out of the clothes?)
(4) use wet wipes in my armpits and crotch
(5) shave the above areas to reduce the smell