In which situation is a barber expected to refuse service to a client?

A barber is expected to refuse service to a client who exhibits any signs of infection or communicable diseases because providing services in such circumstances can pose serious health risks to both the barber and other clients. The transmission of infectious conditions, such as skin infections, fungal infections, or scalp disorders, can easily occur in a setting where close physical contact is unavoidable. Maintaining a clean and safe environment is paramount in the barbering profession, and ensuring that clients do not come in with communicable diseases is a key component of health and safety protocols in the salon.

This approach not only protects the health of those involved but also upholds the barber's professional responsibility and commitment to hygiene standards.