I have never read that you can get rid of Demodex with hypochlorous acid. The link to the product does not make that claim either. My doctor recommends the use of Cliradex wipes for them see here:

https://www.amazon.com/Cliradex-Natural-Eyelash-Cleansing-Towelettes/dp/B00HBISPME/ref=sr_1_5?crid=2QZEARVLBBGWD&keywords=clearadex+eye+wipes&qid=1683237765&sprefix=clearadex%2Caps%2C104&sr=8-5

He also has one do them 2x per day for two months...reduce to 1x per day if not tolerated well.

He also had me on ivermectin which is a prescription drug for a few months as well when they came back.