Which of the following is NOT a disinfectant method used in esthetics?

Sanitizing wipes are typically used for cleaning surfaces and are effective in reducing the number of bacteria, but they do not meet the requirements necessary to be considered a disinfectant method in esthetics. Disinfectants need to be capable of killing a broader range of pathogens, including viruses and fungal spores, whereas sanitizing agents mainly reduce germs to a safe level as determined by public health standards.

Heat sterilization, on the other hand, uses high temperatures to kill all forms of microbial life, making it a reliable method of disinfection. Ultrasonic cleaning utilizes sound waves to remove debris and contaminants from tools and equipment, which is an effective preparatory process before further disinfection. Alcohol sprays are recognized as effective disinfectants, especially against bacteria and certain viruses, and are commonly used to clean surfaces and tools in esthetic practices. In contrast, sanitizing wipes fall short of being classified as a full disinfection method.