What it is: A luxurious overnight body serum to firm and smooth the skin.What it does: It's infused with argan and tsubaki oils, vitamin C ester and holy basil extract to nourish and protect against your environmental aggressors. It features the brand's signature scent. How to use: Apply a thin layer over the body before bedtime. Focus on areas of the body that could benefit from a more youthful appearance, including the décolletage.