The Derwent Academy watercolor pencils come in a convenient metal tin with 12 different skin tones, allowing you to create depth and various dimensions in your sketches. You can use the Derwent Academy watercolor pencils like regular colored pencils or as watercolor paints—just add some water for a smoother finish in your drawing. The Derwent Academy watercolor pencils feature a wooden core and high-quality water-based pigments, enabling versatile mixing and diluting of colors. The skin tone set is specifically designed for creating portraits. A guide for a portrait project is included.