I have been using preshave oil for about 2 months now, and was rushed this A.M., as I had to get into the office by 5:00, so I skipped the oil. Much to my surprise I actually got a smother shave without the oil, than with it. And the whiskers did not stick to the blade, like they do when I have the oil on. I think my preshave oil is going to be sidelined as unnecessary.