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Skin in areas that are not exposed to sunlight is usually soft and smooth to the touch, an indication that sun damage contributes to uneven skin texture. Sun exposure causes the breakdown of collagen and elastin that gives skin its smooth texture and resiliency. Smoking also damages collagen and elastin and contributes to rough, prematurely aged skin. Aging is another common cause of irregular skin texture.
With aging, surface skin cells aren’t shed as rapidly. This causes dead skin cells to build up, leading to skin that feels rough and has a dull appearance. Dry skin that lacks moisture also feels less smooth to the touch.