According to a recent study, faces change from hour to hour, with most people looking best in the morning right before they wake up. Researcher Anthony Savva says that during the night people go through the golden hours of sleep, which is when their body detoxes itself and absorbs any moisturizer that they have put on the night before if any. As the day progresses, exposure to sunlight, pollution, air conditioning, etc. affects the skin. Due to these external factors, as well as to post-lunch sugar slump our faces look most haggard between 4 and 5 pm which researches call the "ugly hour".
