e.l.f. Cosmetics: FREE $10 Gift Card With $20 Purchase! December 23rd, 2011 By Meagan This post may contain affiliate links, which means I will make a small commission if you click and make a purchase. Through Christmas Day, e.l.f. Cosmetics is offering a FREE $10 gift card when you make any $20 purchase! Just use the coupon code GC10 at checkout to get this awesome deal.