I haven't used soap for years myself. Similar to that video I found. I had a feeling years ago (2014-2015?) that soap wasn't necessary and in fact likely made your body smell more etc.

I stopped using soap and shampoo and it came with a bunch of benefits. Mostly complexion, odour and grease improved, and hair colour improved and sun was less damaging and tanning was easier. Plus I don't spend money on shampoo or soap (except dish soap which I use for dish grease etc).

I also avoid using deodorant that isn't natural products and it's also much better than any of the chemical ones.

--

To avoid issues, I always kept a bottle in the shower for the roommates so they wouldnt ask questions (people think you are weird if you say you don't use soap so avoid it)

Also - the longer the hair you have, the longer the transition period :/ -- short hair. Probably a week or so. Longer hair can take a month to get off the shampoo .... So it isn't easy. The best way is to slowly transition away and use less and less and eventually every other shower, then once you get off it you will notice the benefits, but if you go cold Turkey it will be tough for a few weeks most likely as your body will making much too much oil and will clearing out a lot of the buildup chemicals and getting back your normal ph and adjusting your skin chemistry