The quality of the eraser and using the correct eraser for the relevant use are key for achieving optimal results. Soft erasers are ideal for removing strokes that go no deeper than the surface of the paper (pencil strokes, shadings in coloured pencil). Hard erasers are used for removing strokes that have penetrated deep into the paper (e.g. drawn with a fountain pen, gel pens, ballpoint pens). The eraser contains a fine abrasive material (e.g. quartz powder), which scratches a thin layer off the surface. Pencil strokes are always easier to erase than coloured pencil strokes, because graphite does not bond as strongly with the paper fibres. The eraser should be positioned at an angle to the stroke, as parallel movements could initially cause the stroke to smudge. We have a product in the product range to suit every application. From erasers for homework, to high-quality art erasers used by artists. All rubber erasers and a large proportion of the plastic erasers produced by Faber-Castell are LATEX-free and PVC-free. The well-balanced plastic mixture of the quality erasers guarantees soft and smudge-free erasing action.