I'm not asking if you do it, I'm asking people how you do it
Edit: sorry I forgot I posted this and came back to a bunch of answers. I have a torn something in my shoulder that no MRI has been able to find for 20 years so I can't just reach it. I myself use a long cloth, but I don't really like it so I was curious what other people did.
Also, I don't wash my back every shower, but I do get pretty sweaty sometimes and feel like I just have to
I put liquid soap in the palm of my left hand. Turn one the water and put my right hand under, then let water roll off into my left hand. Turn off the water. Wash hands without wasting water. Turn it on to rinse.
There's a guy at my office who would let the water run for the entire five minutes that he brushed his teeth after lunch. I got so sick of it that I printed a sign and taped it to the wall. It said not to waste water and to turn it off while brushing. I haven't seen him doing it since, but I also haven't seen him at all since. I hope he saw it before someone took it down.
I’m surprised how few answers actually include actually practical and helpful tools such as a bathing brush with a good long grip to reach just about everywhere. Is this a cultural thing? I swear I’ve seen them in British tv series at the very least, so I know for sure these are a common thing at least in the Nordics and the UK.
But I mean it’s the best. Really gets the old dead skin cells and other stuff off, and the blood flowing. The bristles are a bit rough, but that just makes it that much more pleasurable, you really feel it!
My wife has one, I don't like to use it, it's too aggressive for me.
I can reach my back with my arms. To get the spot right between my shoulders I have to reach up and come down from the top with one arm, while using my other hand to grab my elbow and pull it to push my hand low enough to get it more effectively.
I dunno. I used to be flexible as hell, but was also too damn broad across the shoulders to get everywhere. That was even before I started lifting seriously; lifting just made the area I couldn't reach bigger.
Somewhere around 16 I hit a spurt and suddenly couldn't reach a zone between my shoulder blades. It was maybe hand sized. In my twenties, it was about an inch or two bigger, but I could still do all the stretches fully before lifting, and that included shoulder stretches where I could end up almost flat with my arms behind me.
Nowadays, I'm just old and stiff, and can't scrub anything right on my back.
I can't explain the marketing, they call all these things loofahs. Just a normal sponge at the end of mine lol. Mostly just get something on a stick and enjoy the same smug cleanliness.
I mean, I assume the water running down my body when I shower is good enough? Can't imagine my back of all places getting so dirty that I need to scrub it.
I also have long scrubby things. Don't know what they're made of, but I think nylon. Basically really long washcloths with a rough texture and strings to hold onto while scrubbing. But the brush does a better job, so I usually only use the cloth ones when I'm away from home because they pack easier.
That's assuming I can't con my wife into getting soaked just to stand there scrubbing me down for a half hour while I continually say "yah, right there, a little harder. Now to the left, oh yeah, that's great, a little more. Now up some, fucking perfect, you're awesome. Now down a little again" and so on until she throws the scrubber at me.
For the regions I missed, I have a soapy mesh/loofah thing held by some kind of rope on both ends and with both hands, I use it to reach the unreachable areas:
left hand upper and right hand lower, loofah going diagonally (like this: \)
right hand upper and left hand lower, loofah going diagonally (like this: /)
both hands lower, loofah going horizontal (like this: —)
I suppose that should be enough, but I only do that once a week. For the rest of the week, I just reach as far as I can and let the soapy water do what it can.
The only effective way is to find a spouse or partner who actually cares about you.
(now single) Old fart here.
Otherwise this is my current one (they're all about 4/10 IMHO): Exfoliating Back Scrubber for... https://www.amazon.co.uk/dp/B0C1YZDFFM or something similar
With a shower just get what I can and hope the spray and soap gets whats left good enough. Sometimes will use a wash rag and I can just barely grasp the corners and get it a bit but not sure its much more vigorous than the spray. With a bath I place the luffa between my back and the back of the tub and move around. That actually should get it pretty good.