If you don’t like using a “wax” pencil for micro blading then this waterproof brow pencil is for you! Automatic rotation design, retractable pencil body, no need for sharpening. Waterproof and long lasting, the colour can stay even after the numbing cream is applied. Double-headed design, one head is pencil body & the other a brow brush. When using the brow pencil, to prevent it from breaking, when you are ready to adjust the pencil length it should be less than 0.2 Inches.