What it is: A double-ended eyeliner with eight-hour staying power and limitless possibilities. What it does: This eyeliner’s creamy, easy-to-apply formula with vitamin E and jojoba oil provides bold definition for up to eight hours. These double-ended liners also work as shadow. Just fill in entire lid with your favorite shade for a bold, graphic eye look. What else you need to know: Known for her collage art, Santigold has partnered with Smashbox to create this vivid and playful color range. The collection encourages an adventurous mix-and-match sensibility. From the themed, often humorous, shade names to the one-of-a-kind jewelry, Santigold has blended her style, hand-crafted artwork, fashion sense, and love of color to create this exciting line.