The eyeliner pen of the 21st century is quite different from the eyeliner pen of the 1970s in color, composition and appearance. Liquid eyeliner pen is an oily liquid eyeliner pen, which is an important product of eye cosmetics in the 1950s. Liquid eyeliner pen liquid can be packaged in two ways: one is the pen tube, which can be dipped into the pen tube for use (or used in automatic pen packaging); The other is canned and needs a professional eyeliner brush.

Eyeliner pen is divided into pencil type and automatic pencil type. It is soft to use around the eyes. Some eyeliner pens with slightly hard texture have the effect of maintaining makeup for a long time. They are dark in color, and can be used to lengthen the eye tail. They are often used for drama and stage makeup.