* There is no true black pigment in human hair. The darkest hair color is actually a very deep brown.
* "Black hair" is a broad term that can encompass a wide range of hair textures, from straight to curly to coily.
* The term can be culturally loaded. It's often used to refer to hair textures and styles traditionally associated with people of African descent.
Therefore, while there's no such thing as *purely* black hair, "black hair" is a common and accepted term to describe hair that is very dark brown and has specific textures and characteristics.