Sleep is a natural and necessary. We spend one third of life sleeping and although it is unclear what it does, what is certain is that it is necessary for life, for physical and mental wellbeing, and to care for and repair the skin.
In addition to fatigue and bad mood, a bad night involves swelling of the eyes, dark circles, pale face and marked signs of expression. Sleep is the best cure of beauty that exists. At night the skin recover from the attacks of the day, because the cells are oxygenated to the fullest. At rest you breathe better so that oxygen is more easily and in higher concentrations to cells.
If the cells have more oxygen, activates metabolism, their ability to survive and multiply, resulting in a young healthy tissue.