Lyra Rembrandt Carbon Extra Dark Pencil combines charcoal powders, graphite, and a touch of Carbon Black to enhance black intensity. It excels at creating deep shadows and defining volume. When used alongside a white pencil, it achieves striking chiaroscuro effects. This mixed drawing pencil merges dry materials with a balanced mix of natural and synthetic oils for a strong, vibrant black. Its precise stroke effectively covers surfaces, with stroke intensity and brightness varying based on the pressure applied, particularly on larger areas. Carbon Extra Dark is highly opaque on all types of paper; while it isn't easily blendable, it can be layered and is partially water-soluble. It sharpens with a large hole pencil sharpener or a knife.