Calling all Instagram users! Hurry over to Facebook and follow the instructions to get your FREE Urban Decay Troublemaker Mascara Sample! There are over 50,000 samples available, but since this is a popular brand they will go fast. Grab yours now if you're interested. It can take up to 3 hours to receive your unique link for your freebie. Spread the word! Allow 1 to 2 weeks for delivery.