As a noob, I find that this really comes down to my stropping. I have 2 Dovos. The first one can shave, but hardly takes hair off now, even after some Crox. I screwed it up stropping poorly. The second one is still shaving well after a week, with daily stropping only, but I really have to watch my stropping. I think as my stropping improves, the length of time between touch ups will increase, as others have mentioned.