What is the primary advantage of using a microdermabrasion machine with separate containers for clean and used crystals?

The primary advantage of using a microdermabrasion machine with separate containers for clean and used crystals is that it helps in proper disposal and reduces cross-contamination. This separation is crucial in maintaining a hygienic environment for treatments, ensuring that used crystals do not mix with clean ones. By doing so, this practice minimizes the risk of bacteria and contaminants being transferred between clients, which is vital for infection control and the overall safety of esthetic procedures. Maintaining clean and used materials separately fosters a more professional standard of care and enhances client trust in the treatment process.

Other options do not emphasize crucial aspects of hygiene and safety that are fundamental in esthetic treatments.