Like pop idols and reality-TV shows, most makeup trends have an expiration date. Metallic eyeliner, on the other hand, has a longer shelf life: In spring and summer, you can wear it in dazzling, vibrant colors, and come fall, you can opt for richer, deeper hues. The only challenge? Finding a formula you love that comes in both summery shades and others that don't need to hibernate during the cold-weather months. Luckily, Too Faced's Foiled Liners ($16.50 each; sephora.com) will enable you to get a gorgeous heavy-metal look year-round. Creamy smooth and waterproof, the liners can be used to create precise or smudgy looks that last all day. Colors like Ruby Slippers, a rosy copper, and Turquoise Tinsel, a shimmering blue, are ideal for making your summer look last (the latter shade made my green-gray eyes pop). Meanwhile, Bronze Bombshell, a warm chocolate, and Metallic Mermaid, a deep jade, are the perfect tools for achieving this fall's ultraintense, smoldering eye. In all cases, these glamorous tints are sure to make a sultry statement in place of your everyday neutrals. --Courtney Sauve