<P> As skin ages, it becomes thinner and more easily damaged . Intensifying this effect is the decreasing ability of skin to heal itself as a person ages . </P> <P> Among other things, skin aging is noted by a decrease in volume and elasticity . There are many internal and external causes to skin aging . For example, aging skin receives less blood flow and lower glandular activity . </P> <P> A validated comprehensive grading scale has categorized the clinical findings of skin aging as laxity (sagging), rhytids (wrinkles), and the various facets of photoaging, including erythema (redness), and telangiectasia, dyspigmentation (brown discoloration), solar elastosis (yellowing), keratoses (abnormal growths) and poor texture . </P> <P> Cortisol causes degradation of collagen, accelerating skin aging . </P>

Human skin gets it’s color from which substance