Which of the following procedures is most closely related to infection control?

Sanitizing is fundamentally related to infection control as it involves reducing the number of microorganisms on surfaces or instruments to a safe level, as dictated by public health guidelines. This process is essential in a salon or spa setting to prevent the spread of bacteria, viruses, and fungi that can lead to infections. By ensuring that tools and surfaces are sanitized, cosmetologists protect themselves and their clients from potential health risks.

Cleansing may involve removing dirt and debris, but it does not necessarily eliminate pathogens to the extent required for infection control. Moisturizing is focused on hydrating and improving the skin's barrier function, while exfoliating is aimed at removing dead skin cells. Although these procedures are important for maintaining skin health, they do not primarily address the concern of infection control the way sanitizing does. Therefore, sanitizing is the most appropriate choice for procedures directly associated with infection control in a cosmetology setting.