What it is: A shadow primer that locks on more vibrant color for a full 24 hours. What it does: This primer makes shadows last and has the added benefit of making color appear more vibrant. Sweat- and humidity-resistant, this formula doesn't fade, crease, or smudge for 24 hours. Why you'll love it: Smashbox tested it and proved that it truly lasts in real life for a full 24 hours - whether you're at an A.M. yoga class or after-hours drinks. What else you need to know: "A primer that makes my eye shadow last for 24 hours? Yes, please! I'll never have to worry about my shadow looking like a hot mess after yoga or a long night out!" - Lori Taylor Davis, Smashbox Global Pro Lead Artist. "My models kept asking for a primer that would keep their eye shadow on after a shoot, because they liked the look so much. This primer is literally like glue for your shadow."- Davis Factor, Smashbox Founder and Celebrity Photographer