It's no mystery that a super good deal is going on today at e.l.f. . When you add $25 worth of products to your shopping bag, simply enter coupon code MYSTERY to receive a free gift! This mystery gift bag is stocked with goodies from e.l.f. and it's guaranteed to be filled to the brim with beauty essentials worth at least $27. Plus, 9 lucky shoppers will receive a $100 e.l.f. gift card in their mystery bag! There's no time to waste, though. This offer is only valid while supplies last or until midnight tonight, 12/13/2013.