What is a key step that should occur before disinfection?

The key step that should occur before disinfection is sanitizing. This process aims to reduce the number of microorganisms on surfaces or tools to a safe level as defined by public health standards. Sanitizing is crucial as it helps remove debris and organic matter, such as skin cells, oils, and nail dust, that can protect pathogens from the disinfectant.

By sanitizing first, you ensure that the disinfectant can effectively inactivate the microorganisms present. Disinfection is more effective when surfaces are clean and not obstructed by dirt or organic matter. Neglecting this step can lead to inadequate disinfection and potential infection risks in a salon environment.

The other options do not represent a necessary preliminary step before disinfection. Saturation refers to soaking something in a solution, which does not directly relate to preparatory steps for disinfection. Exposing refers to allowing products to sit, but it's not a formal requirement before disinfection. Polishing is associated with enhancing the appearance of nails rather than disinfection processes.