the.com/eyeshadow

means A cosmetic powder or cream applied to the eyelids to add color, depth, or shimmer.

from A straightforward 20th-century compound of 'eye' plus 'shadow' — the shadow referring to the soft, shaded gradients of color early cosmetics aimed to create around the eye, mimicking the natural shading that makeup artists noticed gave eyes depth and drama. The product and the word rose together with the growth of the modern cosmetics industry and film-era glamour, where exaggerated eye makeup helped features read under stage and camera lights.