Pure and brilliant colours in soft pastel sticks for those seeking the student-artist quality level. Van Gogh slim, round sticks are ideal for using the edges for detail work or on its side for broad area coverage. Composed of high-quality pigments and kaolin clay for a formulation with easy colour transfer, a velvety appearance, and made to be less likely to crumble. Pigments are free of heavy metals: lead, cadmium, and cobalt. Pastels work fantastic on grounds with tooth (surface texture) that can hold the pastels, such as paper, cardboard, stone, asphalt, or wood. Pastel drawings and paintings are not smudge-proof, and it's recommended to use a fixative on top of finished artwork. Colours are lightfast rated with good (25-100 years under museum conditions) to excellent (100+ years under museum conditions).