How long should a razor blade be used before replacement?

The recommendation to replace a razor blade after 5 to 10 shaves, or when it feels dull, is based on ensuring that the blade performs optimally while minimizing the risk of irritation or cuts. As a blade is used, it gradually loses its sharpness, which can lead to a less effective shave and increased friction on the skin. A dull blade can tug at the hair rather than cutting it cleanly, potentially causing discomfort or even razor burn.

Replacing the blade within this range maintains a balance between performance and safety. Shaving with a fresh, sharp blade provides a smoother experience, which is particularly important in a barbering context where precision and client comfort are paramount. Regularly assessing the condition of the blade is key, as individual hair types and shaving techniques may also influence how long a blade remains effective.

The other response choices suggest either too frequent or infrequent replacement, which could lead to suboptimal shaving experiences. Replacing the blade too frequently can be unnecessarily costly, while waiting too long to replace it increases the likelihood of poor shaving results and potential skin issues.