Pagevine calligraphy eyeliner pen in a brown shade.

Pagevine Calligraphy Two Eyeliner Pen, a dual-ended makeup tool designed for creating winged eyeliner looks.  Dual-Ended Design: One end features a precision liquid liner tip for fine lines, while the other end is a wing stamp to create symmetrical cat-eye shapes. Formula: It is marketed as long-lasting (up to 12 hours according to the packaging), waterproof, and smudge-resistant. Color: The specific pen pictured appears to be in a brown shade (indicated by the brown band on the pen and the packaging art). Target Audience: It is promoted as beginner-friendly, aimed at those who struggle with freehand winged liner.  Stamp: Use the wing stamp on the outer corner of each eye to set a symmetrical guide. Line: Use the liquid liner pen end to connect the wing to your lash line and define the inner corners. Adjust: Some versions of this pen feature a rotating stamp head to help align the angle to your specific eye shape.