Lyra Rembrandt Sketching Pencils Sanguine Dry – Lead is a mix of iron oxides and clays combined with oil-free plant-based binders. It blends perfectly thanks to the fine milling of the pigments which penetrate into the fibres of the paper in a uniform and even manner, starting from the full, dark and saturated tone to reach a light reddish and transparent shade. Easy to use for hatching, it can easily be erased with a putty rubber and should be sharpened with a knife, like all Fine Arts pencils, making a precision tip with sandpaper if required. Use of fixative is recommended.