What is the first action you should take after completing the pre-service procedure for a facial?

After completing the pre-service procedure for a facial, the first action to take is to cleanse your hands and apply warm towels. This step is crucial because ensuring cleanliness by washing hands not only promotes hygiene but also prevents the transfer of bacteria or other contaminants to the client's skin. It sets a safe and professional tone for the treatment.

Applying warm towels afterward serves to prepare the client for the facial, enhances relaxation, and opens the pores, creating an optimal environment for the upcoming procedures. This combination of cleanliness and comfort establishes a positive experience for the client, making it an essential first step following pre-service protocols.

The other options may appear relevant, but they do not address immediate hygiene and client comfort in the same manner. Preparing products, applying a mask, or checking the client's skin type are important steps that come after ensuring that hands are clean and the client feels welcome and ready for the service.