Sleep deprivation takes a toll on the skin, according to SK-II, whose concern coincides with the theme of World Sleep Day celebrated last Friday.
Since 2008, World Sleep Day has raised awareness of sleep-related issues and how to prevent and manage slumber-related disorders. It is held annually on the Friday before the vernal equinox or the first day of spring.
SK-II looked at the science of beauty sleep, in particular how restorative processes occur during the night.