Pastel Sheet Black No-23 Pastel Sheet black #23 is the only art paper on the market today to offer seven grades to choose from. Designed to provide pastel, colored pencil and charcoal artists with a consistent and reliable surface. Pastel Paper accepts a wide variety of wet media for underpainting without compromising or damaging the tooth. You can add layer upon layer, correct and create without impairing the surface of your painting or drawing. And thanks to its unique sanded surface, you don't need to use fixatives. \tPastel paper is ph neutral and acid free. \tIt can accept under painting using a wide variety of media’s such as water, oil, mineral spirits, turpenoid and alcohol. \tAfter the under painting process, the tooth still holds many layers of pastel and the grain will remain affixed to the paper.