I use CrOx on balsa along with FeOx. Usually I use it around every 6-7 shaves then strop as normal. One razor I have I use it EVERY TIME and have for over two years as an experiment. There has been no damage to the razor AT ALL. No double bevel. No deteriation of edge or steel. Nothing. Contrary to many theories. Of course this is not a theory this is something I have done and continue to do. Many people have issue with this but luckily it's not their razor.