In an ideal world, your head would hit the pillow for nine hours of peaceful and beautifying slumber each night.

As Hong Kong dermatologist Dr. Joyce Tang explains, sleep – or not enough of it – really does impact the appearance of your skin, “Sleep is essential in restoring our immune system, which affects your skin collagen production,” she says. “Meanwhile, lack of sleep puts more oxidative stress on your skin, the culprit of skin aging.”

Consider yourself informed. And if that doesn't encourage you to go to bed a bit earlier tonight, opt for products that are designed to turbo charge the skin’s nocturnal self-renewing properties. As Dr. Tang explains, “Skincare products may contain ingredients, such as Vitamin C, which can be deactivated by sunlight and are more beneficial when used in the evening.”