The use of monochrome colors such as sanguine, sepia, black, and white in figure drawing dates back to the Renaissance, and today these colors are found in almost every life drawing class. They bring drawings to life with vitality and expression. Faber-Castell Pitt Oil-Based Monochrome Artist Pencils harken back to this tradition, which is why they are harder than conventional pastel crayons, with lines that do not disappear completely when smudged. Ideal for contours, outlines, and fine details, these extra-soft pencils are water-resistant.