Which of these actions is a violation of salon practice regulations?

Sharing tools among clients without disinfecting is a violation of salon practice regulations because it poses a significant risk of spreading infections and diseases. Health and safety protocols in cosmetic practices, including eyelash extensions, require that all tools and instruments that come into contact with clients are properly cleaned and disinfected between uses. This ensures that harmful bacteria, viruses, or other pathogens are eliminated, protecting both clients and practitioners. Maintaining strict hygiene standards is essential in a salon environment to uphold client safety and trust.

In contrast, practicing on mannequins is a standard part of training for aspiring beauty professionals, as it allows them to hone their skills in a safe manner. Maintaining a clean environment and keeping licenses displayed are also encouraged practices that help establish professionalism and compliance with regulatory requirements rather than being violations.