What goes over the headrest during a shave?

During a shave, it is standard practice to place a towel or some type of barrier over the headrest. This not only helps keep the headrest clean and protects it from any hair, products, or moisture that may transfer during the shaving process, but it also enhances the client's comfort. By using a towel, the barber provides a softer surface for the client to rest their head against, which can help make the experience more pleasant. The barrier also helps maintain hygiene standards in the salon or barbershop setting, as it allows for easier cleanup and prevents cross-contamination between clients.