I thought the issue was over-production of oils. If you shampoo daily you're stripping your hair of all oil and stimulating it to overproduce to compensate.
When you stop shampooing, your hair continues to produce a lot of oil and looks greasy. After a while it reduces oil production and all is well.
Not that I've bothered to look it up, but that was the process I had in my head.
I thought the issue was over-production of oils. If you shampoo daily you're stripping your hair of all oil and stimulating it to overproduce to compensate.
When you stop shampooing, your hair continues to produce a lot of oil and looks greasy. After a while it reduces oil production and all is well.
Not that I've bothered to look it up, but that was the process I had in my head.
If you do try this give it a month or two. It takes a while for your body to get back to producing those oils. It will feel worse before it gets better.