NARS

This liquid illuminator is especially nice because you can apply it in any way you want — all over your face, with a small brush as a highlighter, under foundation, over foundation, mixed with foundation… It's super versatile and so subtle that I sometimes have to layer multiple coats for it to really show, but that's a good thing when it comes to this type of product. It also comes in four colors, like Laguna (shown) for a bronzy glow or NARS's famous Orgasm for that coveted flush. [Illuminator, $30, NARS Cosmetics]