I've been compiling data for a little while now (Around 6 years of data). I'm a daily shaver and used a Merkur 38C for the majority (about 50%) of this list. What I have here is the average number of shaves that I get from a blade. Some are single edge, most are double edge. For some, I don't have much data because I didn't use that many blades. I've removed the blades that I used once and my straight razors (for the straights, I usually get 15-20 shaves between honings). For other, I used a little more(Like the 7 O'Clock green, Astra, etc) so I get a better idea on how many shaves I can get from a specific blade (the more data = the more precise my calculations are correct). Now, some will say that I can twice as much or half of what I have, and that's okay.
I would usually change blade when I don't feel that I can get a comfortable shave. Usually If it happens when I start the shave, I simply change it there. If it's mid-shave, I will finish the shave.
That's how it happened for me.
I would usually change blade when I don't feel that I can get a comfortable shave. Usually If it happens when I start the shave, I simply change it there. If it's mid-shave, I will finish the shave.
That's how it happened for me.
Blade | How many shaves | How many Blades | Average |
7 O'Clock Green | 443 | 35 | 12.65714286 |
Astra Super Stainless | 138 | 15 | 9.2 |
Astra Superior Platinum | 275 | 32 | 8.59375 |
Derby Premium | 184 | 14 | 13.14285714 |
Feather SE | 11 | 3 | 3.666666667 |
Feather SS | 242 | 26 | 9.307692308 |
Gillette Silver Blue | 133 | 12 | 11.08333333 |
Injector Personna Single | 39 | 4 | 9.75 |
Injector Schick | 109 | 6 | 18.16666667 |
Lord Super Stainless | 128 | 15 | 8.533333333 |
Merkur | 156 | 13 | 12 |
Personna Blue | 12 | 2 | 6 |
Personna SE | 125 | 14 | 8.928571429 |
Rapira SS | 114 | 19 | 6 |
Rockwell | 117 | 10 | 11.7 |
Shark SC | 33 | 5 | 6.6 |
Shark SS | 86 | 10 | 8.6 |
Voskhod Telfon Cloated | 11 | 2 | 5.5 |
Total | 2356 | 237 | 9.412778541 |