What is an "eyeliner"?

An eyeliner is a cosmetic product used to define and enhance the appearance of the eyes. It is typically applied along the lash line of the upper and/or lower eyelids to create different effects, such as a subtle or dramatic look. Eyeliner comes in various forms, including pencil, liquid, gel, or pen, each offering different levels of precision and intensity. It is used to add depth and definition to the eyes, making them appear more prominent and captivating. Eyeliner is a popular tool in personal care routines for achieving different eye makeup styles, ranging from a classic and timeless look to bold and trendy designs.