As POPSUGAR editors, we independently select and write about stuff we love and think you’ll like too. POPSUGAR has affiliate and advertising partnerships so we get revenue from sharing this content and from your purchase. Cat-eye nails are taking over Instagram just in time for Halloween. The trend involves a metallic polish running through the center of the nail, creating an effect that resembles a cat’s eye. If you’re baffled by this trend, we don’t blame you. Re-creating the look requires some unique nail tools. First, paint your nails with a color of your choosing. Next, you’ll need a special polish designed for this trend that contains a lot of metallic pigments to paint over your base color. The key to making your nails look like cat eyes is moving the metallic pigments on your nail bed in your desired direction using a small magnet. Depending on how you point the magnet, the shape of the metallic polish will change. To make the manicure look even more feline, you can shape your nails into a thin almond to resemble claws. On a black background, this nail look can appear especially spooky, making it the ideal October manicure to celebrate Hall...