Apply your eye shadow on wet. Use toner that is
alcohol free, an Eyeliner Sealer or just plain old water. Use a
sponge applicator or an eye shadow brush to brush on a light layer
of toner/water across the eyelid or in the crease over the eye
shadow. The trick is to mist the eye shadow, not drench it. Or you
can dampen the applicator/brush first, then pick up your color. That
way, you avoid drenching the product and possibly even ruining it.
Also, this will insure that you will pick up the right amount of
color.