A studio lighting device used to give a flattering effect in portrait and fashion photography. It consists of a large circular dish-shaped reflector, usually around 40-50cm in diameter, with a light source in the center. The light usually has an opaque cover so that only the diffused light reflected from the dish reaches the subject.
Beauty Dish example:
The difference when using:
Sources: Pixabay, Wikipedia, Susan Wingfield Lamar High School