Pearl Ex powdered pigments are simply a dry powdered form of color which has some sparkle to it. You can use it as a dry powder or mix it into something and apply it wet as a paint.
Pearl Ex powdered pigments can be used in a wide variety of ways. The key to understanding them is simply to experiment with them. I'll give you a few ideas to get your started. This is pretty much what I like to do and what I have found that works for me.
Put hairspray and dollop of Pearl Ex in spray bottle, spray on paper for shimmery look. You will keep adding the Pearl Ex until you get the right amount of simmer. Download a Printable Pearl Ex Tip Sheet.
Here is a video on rubber stamping with Pearl Ex by night cats.