> That's not accurate. It does work, as in, it does kill bacteria.

It's known to work in vitro, and it's known to work in toothpaste.

It sounds like there is no body of evidence to indicate that it works in things like hand soaps. Considering how often agents like this are found to work under one set of circumstances and not under another, I'd say that suggests that whether the agent works for this purpose is still an unknown.