Tammy,
I did not have a full set of Unison pastels to test. I may soon, however, and will probably run another test, or series of tests.
I suggest all pastellists buy the kit from Golden and test the sticks in their own paintboxes. It is not terribly difficult; just time-consuming when making the samples. I draw up the excess powder with a vacuum cleaner nozzle held directly above the sample, so one color does not sully any other. Testing what you have is the best way to gain an understanding of what is going to hold up, and what is likely to fade. I suspect you will be surprised at some of the results.
Virgil Elliott
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