Smoking is a well-known extrinsic factor that accelerates skin aging. The toxic chemicals in cigarette smoke, such as nicotine and tar, reduce blood flow to the skin, impairing its ability to repair and regenerate. This results in the formation of wrinkles, especially around the mouth and eyes. Furthermore, smoking depletes essential nutrients and antioxidants in the skin, exacerbating the effects of other environmental stressors.
