It's a proven fact that smokers age a lot quicker than non-smaokers. Rotten yellow teeth, wrinkled skin with broken blood vessels... oh, and don't forget the CANCER. And another thing ----> they STINK.
http://www.stopsmokingtoday.com/dyn/126/The-Effects-of-Smoking-on-the-Skin.html
Long-term smoking can have a detrimental effect on your skin. While cosmetic changes such as premature wrinkles and skin discolouration are not life-threatening, these cutaneous (meaning affecting the skin) manifestations can provide a powerful motivation for some to quit smoking. This may be particularly true for those who took up smoking because of they felt it was "glamorous", only to discover that the reality is taking them even further away from the movie star image that they aspire to. Developing wrinkles is a natural part of the aging process but smoking effectively accelerates aging and makes the smoker appear years older than they actually are. Premature wrinkles, with dry, greyish skin drawn across sunken cheeks may all be part of the gaunt visage of the chronic smoker. There can be other, more serious, consequences for smokers, including the increased risk of some types of skin cancer and a thinning of the skin.
As early as the mid-nineteenth century, it was observed that heavy smoking could cause visible changes in a person's complexion. This included premature wrinkling and a loss of elasticity in the skin, giving the smoker a rough, haggard appearance, and a slightly reddened or orange complexion.
"Smoker's face" occurs because toxins involved in the smoking process create a series of noticeable changes in skin complexion and colour. As the chemicals from cigarettes are absorbed into the bloodstream, they constrict the blood vessels, including the tiny capillaries located near the surface of the skin. The increased carbon monoxide produced by smoking reduces the amount of oxygen that is then circulated to areas of the skin. This means that even less oxygen and nutrients reach the skin through the constricted blood vessels. Combined with this is the capacity of direct exposure to cigarette smoke to irritate and dry-out skin. In the smoker's case, their skin's moisture levels may already be reduced because of the diuretic effect that nicotine has on the body.
The symptoms of "Smoker's face" include a number of distinct characteristics. Prominent lines and wrinkles are usually noticeable emanating from the corners of the eyes ("crow's feet"), even extending on to the cheek. The cheeks themselves may appear sunken. Other wrinkle lines become etched perpendicular to the lips, with shallow lines forming on the cheeks and lower jaw. Some male smokers may also develop a distinctive feature referred to as "cobblestone wrinkles", which are wrinkles that run down the back of the neck. The underlying bone structure of the face becomes more visible under drawn, taunt skin that has lost its elasticity. The skin may take on a dry, tough and leathery appearance. A mottled, slightly reddened, orange and purple complexion may occur because of inadequate oxygenation of the blood, similar to what occurs during cyanosis. On other occasions, the smoker's complexion may develop a grey, unnatural pallor because it is more atrophied than a non-smoker's skin.
Smoking can impede the regenerative properties of the skin. In 1977, L. H. Mosely and F. Finseth published an article that examined how smoking impaired the wound healing capabilities of the hand because of the resulting reduction in blood flow it caused. (2.) Other studies have since back up these findings, factoring in the percentage reduction in blood flow caused by smoking induced vasoconstriction and recording its duration.
It is well established that smoking reduces the skin's ability to regenerate, slowing the rate at which wounds heal and increasing the chances of scarring, especially with regard to post-surgical flaps and grafts. This is why patients are told not to smoke well in advance of them undergoing surgery. It is perhaps ironic that smoking, a major reason why someone may require a facelift, actually reduces the chances of this surgical procedure being successful by compromising the blood supply to neighbouring tissue. Some cosmetic surgeons even take measurements of nicotine levels in patient's blood prior to performing facelifts because of this contingency. Smoking will also hinder the chances of a skin graft being successful because the grafted skin needs to generate new blood vessel buds soon after being attached or it will die create scar tissue. The constriction of the blood vessels near the surface of the skin reduces the amount of oxygen available and affects the removal of dead cells and toxins.
Another consequence of smoking is that it upsets the process the body uses to restore skin by reducing the amount of the protein collagen present in the skin.