How do I disinfect the forehead rest and chin rest between patients?

The forehead rest must be wiped with disinfectant ethanol for each patient to prevent the risk of infection; no other disinfectant should be used as it may corrode the forehead rest. The chin rest paper should be replaced for each patient, and if chin rest paper is not being used, the chin rest itself must be disinfected in the same manner as the forehead rest. (Page 42)