In summary: He stopped washing his hair with any products and started using just cold water, in an effort to help with his dandruff problem. Overall seems to have worked for him. Seemed mildly interesting to me.
Not actually NSFW, but I tagged it because the thumbnail is a close-up of some pretty severe dandruff, and there’s a few seconds of video in the middle where he shows the condition of his scalp before quitting shampoo. Just thought I’d mention, in case that makes you squeamish.
Seems like longer hair somehow does better with this. With shorter hair it seems to build up gunk on the scalp quickly and the hair doesn’t wick it away at all. All for people giving this a try. I dropped antiperspirant and stunk like terrible for two weeks doing so. I no longer have any odor issues and just use a ‘natural’ deodorant with charcoal in it and no antiperspirant and after years of itchy armpits I wish I had done it sooner. That being said, with short hair I feel and smell So much better with a bit of cheap shampoo and it takes all of 15sec to wash my hair. Not something I have any interest in skipping and long hair is just a hassle in general imo.