I can’t figure this out. But as the years have gone by it seems my feet get less dirty than they did when I first starting going barefoot 24/7. And though I don’t purposely try to get my feet dirty, my one “guilty pleasure” that makes my feet jet black is going barefoot in a parking garage.
Before I go out in public barefoot my bare feet are clean but after going places and walking to and from my truck the bottoms get black and most of the time my feet get jet black . And if I have to stop at my house and have to go back out I go back out with dirty black bottom feet . But I like to keep the tops of my bare feet clean . When you’re out in public people always look at you from head then they look at your feet.
If I go out my feet will get dirty anyway, so I don't really think about it. Bare feet are supposed to be dirty, and I think they look cool and are the sign of a true barefooter.
When I see that the bottoms are jet black you know that’s a barefooter. And the blacker the bare feet you know they are devoted to going barefoot and the barefoot lifestyle.