黑发 (hēi fà) literally means 'black hair'—a compound noun formed by the adjective 黑 (hēi, 'black') modifying the noun 发 (fà, 'hair'). It refers specifically to naturally black or very dark brown hair, commonly used to describe human hair color in Chinese. Unlike English, where 'black hair' can be neutral or descriptive, 黑发 often carries positive cultural connotations—symbolizing youth, vitality, and traditional beauty standards in Chinese literature and media.

This term is frequently used in health, beauty, and aging contexts—for example, when discussing premature graying (白发, bái fà) as a contrast, or in product descriptions for hair dyes and supplements. It’s not typically used for animal fur; terms like 毛 (máo) are preferred for non-human hair. 黑发 appears in both spoken and written registers, though it’s more common in descriptive or literary language than casual daily speech.