A half bathroom, also known as a powder room or guest bathroom, is a type of bathroom that contains two of the four main bathroom components, usually a sink and toilet. It is typically located on the main level of a multistory home for easy access for residents and guests alike. A half bathroom is often used by guests who come by to visit for a few hours or by those who don’t want to run all the way upstairs when nature calls. It is generally smaller than a full bathroom and does not contain a shower or bathtub. Adding a half bathroom to a home is considered one of the most profitable home improvements that can be made.