Strobing is the newest trend in the beauty world. J-Lo has been doing this for about ten years but it's a new form of highlighting. Apply it to the top of the cheekbone and blend it to get the perfect highlight rather than making your whole face look shiny.
A great kit for success is the 'Smashbox: Studio Tricks Made Easy.' It includes primer, a contour kit, and the perfect tool for strobing and can be found at Ulta Beauty for $49.