"My sleep has been less than stellar lately, and that often shows up on my skin...except when I remember to use the Shiseido Waso Hydrating Gel Beauty Sleeping Mask ($40) and I have the skin of a plump cherub by morning. This hydrating gel is infused with yuzu, which has tons of vitamins A, C, and E. It feels cooling when you apply it, making it ideal for summer months, and I'm obsessed with the fun little handle on the cap. — Dawn Davis, senior editorial director