Enough to sleep at night and the use of products that help restore skin renewal and repair process to help generate new skin cells get the best results . The quality of sleep will help create a relaxing and strengthening nutrients to the cells as well. It also helps to strengthen the immune system and energy metabolism in the body in balance . If we have insufficient sleep affects the skin fatigue . The ability to restore and repair skin cells to decrease the skin dark and rough. Acne is not easy . It can also result in skin as well.