You might be aware that your skin regenerates itself at night, but did you know this process peaks at 1 am? Which means you need to switch off netflix and slather yourself in Clarins Hydra-Essential Night Cream (£42) even earlier! This night cream was added to its hyaluronic acid-based range last year and is designed to lock moisture into the skin. If you like the original cream for its lightweight texture you will love this.