It's mildly anti-fungal as well, which makes it effective in dandruff shampoo since a lot of dandruff is caused by fungal overgrowth, aka seborrheic dermatitis.
replyAnother weird/fun one is using bleach as an anti-inflammatory (topical only, of course...), although these days you can find derivative products that offer the same benefits but are much less harsh.
I take a mild bleach bath sometimes and it’s quite invigorating. Seems to kill off a lot of skin surface bacteria which can sometimes be beneficial (there’s good and bad bacteria on your skin).
replyNot to be done too often but every once in a while I find it helpful. Not all that different from a strongly chlorinated pool.
Another cool one, especially if you don’t have a sauna, is doing a mustard bath. You will sweat like a stuck pig