The new revolutionary color that does not fade in 100 years if there are museum conditionsDerwent Lightfast Pencil has been tested under the harshest conditions for international standards, which make other lightfast colored pencils the pure amateur gear.100% lightfast, all colors are of superior quality and comply with ASTM D6901 and Blue Wool Scale ISO 105Revolutionary oil-based core that creates a buttery, velvety texture that allows colors to mix and blendRich, vibrant colors that deliver a fast and opaque laydown Colors can be mixed on the side to create a paint-like effectThe set contains 12 Lightfast pencils in a canThe 12 colors are:Sun Yellow, Scarlet, Salmon, Violet, Mid Ultramarine, Mallard Green, Brown Ocher, Yellow Ocher, Sandstone, Natural Brown, Black and White