Greasepaint is thick, oily makeup that actors apply to their faces for theatrical performances. Unlike regular makeup, greasepaint has a heavy, creamy texture because it contains oils or wax mixed with pigments. It was invented in the 1860s and became essential for stage actors because it wouldn't run or smudge under hot stage lights and could be seen clearly from the back row of a theater.

Theater actors use greasepaint to exaggerate their features so audiences can see their expressions from far away. A villain might use dark greasepaint around the eyes to look menacing, while a clown uses white greasepaint as a base before adding colorful designs. The makeup helps transform an actor's face to match their character.

Traditional greasepaint felt slippery and heavy on the skin, unlike modern stage makeup. Actors had to use special cold cream to remove it after performances. Today, “the smell of greasepaint” can refer nostalgically to the excitement of theater life. When someone talks about “greasepaint and spotlights,” they mean the thrilling world of stage performance, where actors transform themselves night after night to tell stories.