Which of the following is a characteristic of a disinfectant used in esthetics?

A disinfectant used in esthetics must be non-corrosive to ensure the safety and longevity of equipment as well as the well-being of clients. Non-corrosive disinfectants will not damage metal surfaces or other materials commonly found in esthetic practices, such as tools, equipment, and furniture. This characteristic is crucial, as estheticians rely on various instruments that can rust or degrade if exposed to harsh chemicals. Additionally, a non-corrosive disinfectant ensures that it will not irritate the skin or cause allergic reactions when used in proximity to clients, maintaining a safe and professional environment.

In contrast, the other choices do not align with the standards expected from disinfectants in the esthetic field. A disinfectant should act quickly to effectively eliminate pathogens, be potent against bacteria, and be cost-effective to ensure that practices can maintain high standards without incurring prohibitive costs.