Guerlain Meteorites Base Perfecting Pearls ($82 CAD) is a makeup base marketed as a color-correcting and radiance-boosting primer. Although pink in the bottle, the liquid disperses as a light pearl shade and blends in transparent onto the skin. The balls liquify (As you can see in the bottle) and you get a pure serum when dispensed.
I dont notice this primer doing anything on my skin: it doesnt make my base feel extra prepped for makeup, doesnt radiate my skin or make my makeup last longer. Besides being nice to look at, this is not very special to me and is not beauty swatched approved.