Which term refers to the ability of hair to shine and reflect light?

The correct term that refers to the ability of hair to shine and reflect light is luster. Luster describes the quality of how light interacts with the surface of the hair, giving it a shiny, reflective appearance. In hairdressing and cosmetology, a high luster indicates healthy hair that has a smooth cuticle layer, allowing light to bounce off effectively, which enhances the overall appearance of vibrancy and shine.

While "sheen" is often used interchangeably with luster in casual conversation, in the context of hair, luster is a more precise term to describe the hair's capacity to reflect light due to its smoothness and health. Texture relates to the surface feel and structure of the hair rather than its reflective qualities. Tone refers to the color quality of the hair rather than its shine or ability to reflect light. Understanding these distinctions can help in assessing and discussing hair health and aesthetics in a professional setting.