Pros : It gives a very nice shimmer to fired glass, and a little seems to go a long way.
Cons : I didn't realize that it would not fuse onto the iridescent side of glass, so that left one batch with all the powder rubbing off on my hands. Also one time I tried to do a second coat to add more shimmer it just turned out more like a white coating.
Other Thoughts : I'm still pretty new to glass fusing, so I wouldn't take my experiences as being what yours might. I think probably with more experience and knowledge of the product you will have a better outcome.