Overview: Clutter buster Peter Walsh is back and helping a viewer clean out her work-from-home space. Then, Rachael's dermatologist is sharing her top five skincare products, plus explaining how to add retinol to your routine for anti-aging. Meanwhile, "Twins That Cook" Aria and Maya Christian share their dark chocolate chip cookie recipe—and we're drooling. In Rach's kitchen, she's making lamb chops.