(This post was last modified: 08-16-2016, 04:27 AM by ShadowsDad.)
Using spine back SE edge GEM SS ptfe blades I regularly get at least 20 shaves per blade, and it's not at all unusual to get over 30 shaves per blade. The first shave and the last shave don't feel at all similar, but the last shave isn't uncomfortable. If it was I wouldn't use it for that many shaves. I'm not a masochist. I can the blade when it starts to cut inefficiently. I won't change my shave or the number of passes; I change the blade. My present blade has at least 11 shaves on it, as recorded by tally marks on the wrapper.
There's no danger in trying this for yourself. GEM SE SS ptfe blades don't bite as they get dull. They merely stop cutting whiskers efficiently. They don't act at all like a DE blade. I have never had one draw blood as it got inefficient... ever, and I've used many of them.
Before I forget (again), and I did forget... if a SE blade gets rusty, or only gives a few shaves... it's carbon steel. I'm betting that they were bought at CVS. Walgreens has the GEM SS version, but died in the wool SE users buy their blades in bulk from Ted Pella, EMS, or Connaught for the best price in bulk. I can buy GEM SS ptfe blades for an average of under $.01 per shave in bulk. That would be $.25 per blade. For the quality of the shave that's very inexpensive.
wyze0ne and
Matsilainen like this post
Brian. Lover of SE razors.