This opaque white ink pen is perfect for correcting mistakes, or adding shines and highlights to your drawings. Waterproof when dry and capable of writing on paper, glass, plastic, and metal. Fine 0.5mm valve-action tip
First use instructions: 1. Make sure the cap is completely closed. 2. Shake the pen gently. You should hear a clicking sound; that is a ball within the pen that helps agitate the ink. 3. Gently push down the tip on a scrap sheet of paper until the ink begins to flow. 4. Replace cap firmly and store horizontally after opening.