What should barbers do if they notice a client has a rash on their scalp?

When a barber notices a rash on a client’s scalp, the most appropriate action is to refuse service and recommend the client see a doctor. This approach prioritizes the health and safety of both the client and the barber, as the rash could be a sign of a contagious condition or an infection that needs medical attention.

Continuing the service despite the rash could worsen the client’s condition or risk transmitting an infection. It's also vital to maintain hygiene standards in the barbershop to protect other clients and staff. Ignoring the rash entirely is not acceptable, as it fails to address a potential health issue that could have broader implications. Although applying lotion might seem like a comforting option, it could irritate the rash further or mask a more serious problem. Thus, refusing service and advising the client to seek medical advice is the most responsible and professional course of action.