Lightfastness of coloured pencils

Coloured pencils have something called lightfastness. This determines the pigment’s resistance to fading or changing its hue over time. This is especially important when under the UV rays of sunlight because it’ll cause the fading to be faster. Different brands of pencil will have different ratings. Each colour itself will also have its own rating. So, it’s a good idea to do some research on whichever brand you’re using, and the colours in the range. If you plan on selling your work, this is a important aspect to be aware of. Generally, the higher quality the brand, the more lightfastness is provided.