For larger Items i run though my Xyron and then I always seal it with modge podge. There are other products out there, but I like podge podge the best. When running the paper through you your Xyron sticker maker, you always want to seal your glitter. I just paint the the glue on in a thin coat. It take about ten minutes to dry. You can use a heat gun to speed it up, gut be careful not to hold the heat tool too close. You can get burnt marks. If you can see the glue bubble, you are holding it too close. I did that once when making glittery leaves. The burn marks actually looked awesome with the color of glitter I was using.
For smaller projects I will either glossy accents, tacky glue or the MS glitter glue. It all depends on what type of look I am going for.
Dimensional glue is a great glue to use for glitter cuz u have 2 choices. #1: U can apply the glue for flat items then spinkle on the glitter or u can use dimensional glue if u want ur glittered item to have dimension. I have done both, flat and dimensional.
When I want it to look and feel like glitter and stay put, then I use The Best Glue Ever (yes that's the name) by ScraPerfect. If I want it to be sealed within a plastic coating, then I would use a dimensional glaze over it.
Here's a card by Peraspera and she used the The Best Glue Ever for mica flakes and she wrote that "mica isn't particularly glue-friendly, and she tried Zip Dry, Ailenes Super Tacky,and E6000 and found The Best Glue Ever to be the best".
You can even stamp with this glue and sprinkle glitter on it. (And if you do it on fabric and wait 24-48 hours, you can wash it and the glitter will stay.)Here's a video about stamping with the glue and applying glitter www.youtube.com/scraperfect#p/u/6/nzr cwfKZ8X0
There are a many more videos about it at www.youtube.com/scraperfect like how to re-sticky you Cricut mat or how to make your own glue spots.
for glues i use aleena's tacky glue, glossy accents diamond glaze pretty much whatever i have on hand but i seem to go for my aleena glue i let it dry with the glitter on it then i spray with a clear coat spray paint never had a problem with the glitter flaking off.