Washington Barber License Practice Exam 2025 - Free Barber License Practice Questions and Study Guide

The presence of rust, discoloration, or residue on a razor blade strongly indicates that it has not been properly sanitized. These signs suggest exposure to moisture and possibly contaminants, which can compromise hygiene and safety in barbering practices. A properly sanitized razor blade should appear clean, shiny, and free of any rust or discoloration, reflecting that it has undergone a thorough sterilization process to eliminate any harmful pathogens. Such maintenance is critical in preventing the transmission of infections among clients.

In contrast, sharpness and gleam are characteristics of a well-maintained razor, but they do not inherently indicate whether the blade has been sanitized. Flexibility and lightness pertain to the physical properties of the blade rather than its sanitation status. Size and weight also do not provide relevant information about the cleanliness or safety of the razor. Therefore, the identification of rust, discoloration, or residue is the key indicator that highlights a failure in proper sanitation practices.