Did you know that your skin is actually hard at work every night? While you're getting your beauty sleep, your skin is clocking in for its own overnight shift. As strange as the idea might sound, the science behind it makes total sense. At night, your skin shifts from defense mode to repair mode, working to fix the damage it accumulated throughout the day. The key thing happening during sleep is mitosis — a process where your skin’s cells divide to replace old, damaged ones. This means your skin works on creating new, healthy cells, producing more collagen, and repairing...