What infection can be caused by non-sanitized tools?

Non-sanitized tools can lead to bacterial infections or cross-contamination because unsanitized instruments may carry harmful germs and bacteria from one client to another. These pathogens can enter the body through small cuts or abrasions on the skin, leading to infections that can manifest in various forms, such as skin irritation, boils, or more serious systemic infections. Effective sanitation practices are essential in a cosmetology setting to prevent the spread of infections, as tools that have not been properly cleaned and disinfected can harbor bacteria that thrive in moist environments.

Additionally, while viral and fungal infections can also be transmitted in unsanitary conditions, the question specifically emphasizes the general risks associated with bacteria and cross-contamination, making this answer the most comprehensive in addressing the primary concern regarding the use of non-sanitized tools. Allergic reactions, on the other hand, are typically a response to specific substances or products rather than an infection caused by contamination, which further supports why the focus is on bacterial infections and cross-contamination in this context.