I am new to pastel drawing. I have a few Nupastels that I purchased a few years ago. I am interested in purchasing more of these, but I read a few posts on the web that Nupastels are not light-fast in reds and blues.

My question is whether or not Nupastels are actually light-fast, in general or compared to alternate brands, and if different colors matter.

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    Welcome! This may sound really obvious but could you actually ask a question? Right now you have several statements but no question... while I'm guessing that you're asking "Are these pastels light-fast?" but ... you could also be asking "What do I have to protect the art made from these pastels from fading?"... Please give us a bit more information! Thanks! – Catija Apr 22 '17 at 2:19
  • OK, are they light fast? I am doing a test of a few colors right now. I have reds, greens, blues, and violet. I made a long stripe on sketchbook paper for each color. I cover half of the stripe with black paper, leaving the other half exposed. I set this in a window for a day and there is no change. My windows have a coated, so I am moving the test outdoors in direct sunlight. I think this should tell the story. I will report the results here. My question is whether or not anyone has had a bad experience with lightfastness of Nupastels. – dscapuano Apr 23 '17 at 13:30
  • It could take months to see a difference... my (very basic) understanding is that red pigments in general are quite prone to fading over time. – Catija Apr 23 '17 at 14:38
  • I suggest you get a set of Nupastels. They're one of my favorite pastels. They are relatively cheap and they blend beautifully and so smoothly. Though they are considered one of the hardest chalk pastels, they are great for backgrounds and can even be applied on softer layers. Trust me they are amazing, no one ever regretted buying a set of Nupastels. – Bach Aug 15 '17 at 16:02
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    Rick Peterson posted a Nupastels Light Fastness test that he conducted on 95 colors, over a 3 month period, here: rickpetersenspaintingaday.blogspot.com/2013/04/… As for the lack of ASTM Standards for Lightfastness in Pastels, read this update on the IAPS’ efforts to solve this problem: iapspastel.org/pdf/IAPS_News_Spring2018.pdf – Laurent R. Feb 24 '19 at 7:34

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