How to properly change razor blades?
Sharpness is a property inherent to razor blades. Therefore, careful handling is indeed necessary. Proper handling of the blade reduces the chance of cutting yourself. Not without reason did King Camp Gillette call his invention, a razor with interchangeable blades made at the beginning of the 20th century, "safety razor" - being much safer than the common shaving razors used during this time.
In general, a blade should be changed approximately after every 5 to 8 shaves - depending on your shaving behavior, the quality of the blades and growth of beard.
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