Skin aging occurs because smoking causes blood vessels shrink, the body receives insufficient oxygen, resulting in both collagen and elastin, which are two important surface for reduced.
Your skin is aging prematurely because smoking causes blood vessels to contract, the body was not enough oxygen resulting in both collagen and elastin, which are important for two sagging skin.
Your skin is premature aging because rooms make blood vessel contraction makes the body has enough oxygen to both collagen and elastin, which are the two most valuable for skin decreased.