Can be applied over cured Genesis paint to give a matte finish (no shine). It's not a sealer, and not necessary unless you want to eliminate shiny areas. If applied too thickly, it will create a sandpaper texture, so I recommend a very thin coat well spread out. It takes about 2 minutes longer to heatset than Genesis colors. You'll know if you didn't set it long enough by a chalky appearance.
It's wonderful for cutting the shine on silicone-vinyl dolls! Hurray, no more shiny babies :-) Since Genesis doesn't package a one ounce size, I repackage and relabel these jars myself, and they have the full instructions for use on the back label, just like the larger size.
With your purchase of any Genesis paint product, you may be interested in my FREE reborning instructions now found on the main menu of the Home Page.