Derwent Lightfast pencils have been formulated to be 100% lightfast. The revolutionary core is resistant to prolonged colour change ensuring artwork will not fade for up to 100 years under museum conditions. Its smooth oil base creates a rich vibrancy and can be mixed on the page to create a paint-like effect. Made from the finest raw materials and the purest pigments, all colours comply with internationally recognised lightfast testing standards ASTM D6901.
Many people equate lightfastness with permanence. This is not strictly accurate as many other factors can affect the permanence of your work such as humidity, temperature, atmospheric pollution, reactions between different pigments and chemicals, the paper you use, and even the way you use your art materials.
For optimum performance of your pencils follow these simple guidelines: