Which practice helps prevent cross-contamination in a salon?

Using clean tools for each client is vital in preventing cross-contamination in a salon environment. When tools are used on multiple clients without being sanitized, there is a risk of transferring bacteria, fungi, or viruses between clients, which can lead to infections or skin irritations.

The practice of using clean, sanitized tools ensures that each client’s treatment is performed with equipment that is free from contaminants left by previous clients. It underscores the importance of hygiene and safety in personal care services, which not only protects clients but also enhances the salon's reputation for providing safe and professional services.

Other options may imply practices that do not adequately safeguard against contamination, such as reusing tools without sterilization or only cleaning tools at the end of the day, which can expose clients to health risks. Therefore, the emphasis on using clean tools right from the start of each appointment is a fundamental practice in maintaining a safe salon environment.