What is the term for a plastic head-shaped covering that gives the appearance of baldness?

The term for a plastic head-shaped covering that gives the appearance of baldness is known as a skull cap. A skull cap is specifically designed to mold to the top of the head and create a smooth, hairless look, making it a useful tool in costume and makeup design, especially in theatre and film, when portraying characters that require an appearance of being bald.

Wigs are used to cover or enhance the hair on a head and do not serve the purpose of creating a bald appearance. A rostra refers to a raised platform used for performances or speeches, and set props are objects used on stage to enhance the visual storytelling of a production. These other terms do not accurately define the specific head covering that mimics baldness.