7 days for me during early summer. I purposely did this to see what the results would be. I changed my clothes every other day and wiped as best as I could after my morning dump. I didn't wash my face or rinse out my eyes. I did not train the whole week.
Here are my day to day notes...
Day 1 Underarm BO becomes more noticeable.
Day 2 Underarm BO becomes much more noticeable.
Day 3 Face/skin getting more oily. Ass and crotch starting to get stinky. Hair starting to smell.
Day 4 BO is hard to cover up with deodorant. Ass smells shitty and crotch smells musky.
Day 5 Eyelids becoming crusty. Scalp itches. Hair smells. BO is really bad. Cruddy/smelly toe jam is forming.
Day 6 Itchy all over, especially crotch area. Overall cruddy feeling. Ass and balls stink to high heaven. Asshole feels very itchy and crusty.
Day 7 BO is impossible to cover up with deodorant and clean clothes. Scratching skin causes dirt balls to roll/peel off... even the body parts that are covered by clothes. Ass and crotch are putrid.
It took 20 minute shower to get most of the crud off. Did not feel totally clean until after the 3rd shower.
This makes you really appreciate running water and bathing facilities. We take these luxuries for granted now. I read that in the 1800's people only took baths once or twice a month... yikes.