Glossiness refers to the shine or luster of a surface, indicating how well it reflects light. Surfaces that are smooth and polished, like those of glass or metal, tend to have higher glossiness, while rough or matte surfaces, such as paper or wood, have lower glossiness. Glossiness is often measured using a gloss meter, which quantifies the amount of light reflected at a specific angle. This property is important in various industries, including automotive and cosmetics, where the appearance of products can influence consumer perception and desirability.