How often do I need to change a blade in the Single Edge?

Each Single Edge razor ships with a pack of 20 stainless steel standard injector razor blades. An entire pack can last you up until 6 months. Great deal, right? It really depends on the individual preference and frequency of use, but most blades last about 5 - 10 shaves before needing to be replaced. A great rule of thumb is when you feel your skin starting to tug with the razor, it's time for a fresh blade.

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