Which of the following materials is commonly used to prevent cross-contamination in esthetician practices?

In the context of preventing cross-contamination in esthetician practices, cotton swabs are particularly effective due to their disposability and convenience. They are typically used to apply products or remove impurities without risking the introduction of bacteria or other contaminants from one client to another. When a fresh cotton swab is used for each application, there is a significantly reduced risk of transferring pathogens, which is crucial for maintaining hygiene standards in the esthetics field.

While reusable cloth towels, glass spatulas, and metal tools can also play a role in hygiene, they require proper cleaning and sterilization after each use. Reusable items can harbor bacteria if not properly processed, and proper handling must be ensured to prevent any risk of contamination. Therefore, cotton swabs stand out because they can be disposed of immediately after use, making them an ideal choice for maintaining a sanitary environment during esthetic treatments.