Originally Posted by JPQ
And i add to these Rembrandts these have something which makes to me problems when i tested three of these. and i have other pastels with same pigments think pg7 and py154 and these dont have same kind problem. and importer thinked problem is pigment(s) but based what i heared my own special problems looks like kaolin clay is problem. Girault Grey scale box looks nice even still where is yellow greens ???
The best solution is to try different brands. If you can get to a store where you can look at the sticks in person, pick out the missing yellow greens you can't use from other brands and sniff them. If the allergy is to kaolin clay, then some brands will make you react but the color of the pastel won't be relevant. If it's a pigment, you may be able to find a brand that uses a different pigment for that hue.
At worst, you can try using bluer greens with lemon yellows to optically mix your yellow greens if all the yellow greens you encounter give you a bad reaction.
Allergies are no fun to live with no matter what they are. I've got an allergy to house dust but I think it's to the dust mites because pastel dust never sets it off. Very glad of that since I love soft pastels.
If you try a Dakota Sampler in Greens, there will be some yellow greens in it. You could also phone Dakota, explain your problem and ask them to make up a special sampler that's ALL variations on yellow green rather than "all the greens." Dakota is a small enough company that they give very personal service, so they might be willing to create your sampler and help you get around that problem.
You could always list the ones you can't use on the Swap Shop so that someone else can get some use out of them.