Reminds me of a minor drama that happened on the internet one of these days because a brazilian moved to the US and since she's a beautician she discovered that americans not only don't shower every day but don't wash their butts. Meaning that every time someone came in asking for a brazilian wax she'd have to tell them to wash themselves in the bathroom because even their underwear was dirty with poop.
Then an american doctor made a video response to her, saying that the tiktok was unprofessional and embarrassing. And that the correct thing to do was for the beautician to wash people's asses.
There's a case to be made that if you live in a cold place you can avoid using shampoo and other products every day. But there's no reason not to clean yourself of your own dirty skin.