Smoking & it's effects on facial skin.
Increased levels of Reactive Oxygen Species is the main cause of bad effects of smoking.Temperatures reach around 800 degrees centigrade when cigarette is lit & numerous chemicals like nitric oxide, carbon monoxide, tars ,phenols, aldehydes , nicotine are released. Because of this there is reduced blood flow & oxygen supply.
Metabolic activity of tissue cells is affected. Cumulative effect is Wrinkled & Pale Skin.Less oxygen supply affects function of Mitochondria, cellular function is reduced resulting in pathological conditions.
Second-hand smoke also presents serious health risk. It can cause superoxide damage & increase arterial stiffness. This leads to Hypoxic conditions & subsequent Wrinkles & premature skin aging.