Yeah I looked at it a while back. I havent read the full thread to be honest as it doesnt seem to available to the public, and if it is, im sure it's expensive. That said, there are definitely some impressive results with some patients, there is no disputing that.
My impression, especially given the zinc and sodium bicarb, is that this works in a similar way to zix or cetirizine for that matter. I believe the mechanism is anti inflammation achieved by lowering acidity, which is what the paleo diet advocates. So zinc and sodium bicarb are above 7 ph and I think that's what reduces acidity and therefore inflammation. Im not sure how cetirizine works, but I do believe it reduces inflammation (which is why it works for allergic reactions).
Dr William Davis discusses in wheat belly, and some others argue that inflammation is the main cause for disease. That goes from heart disease to cancer. That's why statin drugs are effective because they reduce inflammation. He blames the pacreas being shocked by high carb diest which spikes insulin and cause a yo-yo effect - but the mechanism is the same. Reduce inflammation and things works better.
So reduce scalp inflammation and hair grows better. I think zix achieves this, as could other topicals.
Personally my next experiment is with cetirizine applied 12 hours apart from zix. I'll probably start that in a couple weeks. Otherwise, I could be tempted to add sodium bicarb to zix, but I'm also tempted to try drinking it....
https://www.sciencedaily.com/releases/2018/04/180425093745.htm
It's just my theory, im no scientist, and cannot say anything with certainty, as I it's not my profession.