Skindinavia Makeup Finishing Spray bills itself as "the orginal makeup saver," and "the first mist created to extend wear by cooling the makeup surface." It has a "unique color pigment dispersion system that keeps makeup well-blended with no clumping or smudging of foundation, eye shadow, blush, and concealer. Stops makeup from melting, losing color, or drying out. Works with all types of makeup."
Just don't spray it immediately after applying mascara. Unless you're going for the "instant raccoon" look. Otherwise, yeah, it does a pretty good job of keeping makeup in place. It feels a little odd going on - wet - but it dries quickly.
Featured in the upcoming BeautyFix mailing.