It is easy to distinguish a smoker from a non-smoker by looking at his or her skin, fingers and face. Smoking not only causes yellowed fingers and fingertips or premature wrinkling but also a variety of serious skin problems. For instance, smoking increases the risk of developing psoriasis, a chronic skin problem, which is not only unsightly but also painful.
Clinical studies establishing the link between smoking and skin problems
Many studies have established the negative effect of smoking on skin. A recent study in South Korea involving smokers and ex-smokers between the age of 20 and 69 found that, out of the 2 groups smokers had a higher amount of wrinkles. The study also showed that the ex smokers age had less wrinkles than those who still smoke.