It really works

, and application is really easy. You don't need to wash it off; it's absorbed within a few minutes after application. Washing hands after application is a good idea, but after then you can just forget it until the next application. Make sure to read the package information leaflet, but even there, I can't find instructions that you have to wash it off at any time.
I have heard that some people react to it differently, but for me, it works fine.