As we get older, the essential structure of our face will change; because of lifestyle, smoking, gravity and general ageing. Our body will produce less collagen and elastin, which are proteins essential for elastic, youthful-looking skin, and with less collagen and elastin being produced, this means the skin will eventually start to sag.
from Health and Fitness:Anti Aging Articles from EzineArticles.com http://bit.ly/2ZvQ2uo