The number of shaves that you get from a blade is affected by how many passes you make per shave. Everybody does not do the same number of passes.
I get one to many shaves from any blade, with some blades not even making it through the first shave. That includes Derby.
The numbers on the Derby blades are there for the purpose of calibrating the machinery they use to sharpen the blades. It's part of the quality control process for them.
I get one to many shaves from any blade, with some blades not even making it through the first shave. That includes Derby.
The numbers on the Derby blades are there for the purpose of calibrating the machinery they use to sharpen the blades. It's part of the quality control process for them.