Prepare the Pen: Shake the pen lightly before use to ensure the solution flows evenly. Remove the Cap: Take off the cap to expose the precision felt-tip applicator. Apply on Mistakes: Gently press the tip against the area of nail polish you want to remove. The pen will release a small amount of acetone-free remover. Carefully wipe or blot the smudge with the tip. Repeat if Needed: For larger or stubborn mistakes, repeat the process until the polish is removed. Replace Tip if Stained: Swap the felt-tip with a spare one when it becomes saturated or stained with nail polish. Close the Pen: Always replace the cap tightly after use to prevent drying out.