Rotation Eyebrow Pencil Waterproof Long Lasting & Double-End Eyebrow PencilSelf sharpening high quality brow pencil draws on tiny brow hairs to fill in sparse areas or gaps, and spoolie brush styles and defines brow shape The pen core adopts the principle of triangular structure of architecture and three dimensional structure of point, line and surface, which is stable, durable and not easy to break The easy to apply formula easy to colored, and it can waterproof ,sweat resistant, and lasting color