The dividing line between shimmer and glitter is seemingly modest, but boy, is there a gigantic difference between the two (let's just say glitter is kind of like shimmer's trampy sister). There's a time and a place for everything, but when it comes to your makeup this summer, subtle shimmer is the way to go: it reflects light and imparts a dreamy, ethereal glow that can't quite be traced, completely devoid of the garish "1980s prom in Utah" effect glitter is infamous for. A touch of incandescence restricted to one area of the face not only brightens but also draws the eye away from imperfections, so nobody has to know about the dark shadow under your eyes or the zit on your chin, because look, you're shimmering, and it's so pretty! Also, bonus: men don't really know about this stuff, so when they see you glistening all over the place they just think you're magic, and what more could you ever want than for people to think you're magic? That's what I thought.