It's important to establish a nighttime skincare regimen to restore skin's defenses and replenish essential moisture. Your skin can lose moisture during sleep, making hydrating ingredients especially important.
As skin ages, the natural cross-linking of elastin fibers is reduced. At night, while you sleep, the skin works to repair and restore its structural components, and actually "opens up" to allow creams and serums to absorb more readily. You can get the most bang for your buck, then, by applying products with powerful anti-aging ingredients before bed.
To help skin restore itself at night, you should adopt a nighttime skin care routine that includes an exfoliating cleanser, a serum and a moisturizing cream created for evening use.