I love swaps. In fact, my neighbor and I were just saying how we should do one amongst our friends. One woman's trash is another woman's treasure, after all. So, if you love swapping just like me, here's a switcheroo that's right up your alley. Just for today, from 10 a.m. to 9 p.m. at participating Saks Fifth Avenue stores, you can receive a complimentary bottle of full-sized Frédéric Fekkai Advanced Shampoo (a $23 value) of your choosing. Not too shabby, eh? All you have to do is bring in any full-sized full or empty bottle of shampoo that you currently use, and you'll be able to exchange it for Fekkai. It's as easy as that. (To be fair, it's only one shampoo per customer, and, as always, available only while supplies last.) Will you be first in line?