There is absolutely no lightfastness scores on these pencils as they aren't seriously made with artists in mind. The best rate I found worked out to about $0. Disadvantages: Very pricey, can be quite a bit messy in software, somewhat missing in browns and grays, not fantastic at blending The https://bestcoloredpencilsforadul11845.bcbloggers.com/32646042/how-much-you-need-to-expect-you-ll-pay-for-a-good-good-coloured-pencils