In the proper sanitization process, which of the following steps must be performed first?

In the proper sanitization process, cleaning must be performed first because it is the foundational step that prepares surfaces and tools for further disinfection or sterilization. Cleaning involves removing dirt, debris, and organic matter from surfaces, which is crucial because contaminants can inhibit the effectiveness of disinfectants and sterilization agents. Without thorough cleaning, any disinfection or sterilization process that follows may not be effective, as it targets microorganisms but cannot penetrate through dirt or debris. Therefore, starting with cleaning ensures that the subsequent steps can perform their intended functions more effectively, leading to a higher level of sanitation and safety in any setting, especially in beauty and personal care environments like eyelash extension applications.