What is it: A shadow primer that locks on more vibrant color for a full 24 hours! Why you'll love it: We 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. Just the facts: Sweat & humidity-resistant. Locks on color for 24 hours. No fading, creasing or smudging. More vibrant color- instantly.